| P |
|
noun - The sixteenth letter of the Appendix:Roman script, English alphabet, preceded by O and followed by Q.
abbreviation - Park
- Phone
- Pager
- Passenger
|
|
| palladium |
|
noun (countable and uncountable; plural palladia or )
- (countable) a safeguard (from a statue of Athena that was believed to safeguard the ancient city of Troy).
- (uncountable) a metallic chemical element (symbol Pd) with an atomic number of 46.
|
| palmitic acid |
|
noun
- (fatty acid) One of the most common saturated fatty acids; it is found in all animal and most vegetable oils and fats; it is used in the manufacture of soap etc.
- (organic compound) hexadecanoic acid, CH3(CH2)14COOH
|
| para |
|
noun - Formerly, one-hundredth of a dinar in Yugoslavia and, later, in the constituent states of that country.
|
| paraffin |
|
noun
- a petroleum based thin and colorless fuel oil, (kerosine in US English.)
- (chemistry) any member of the alkane hydrocarbons
- paraffin wax
|
| paraffin wax |
|
noun
- A waxy white solid hydrocarbon mixture used to make candles, wax paper, lubricants, and sealing materials
|
| parent compound |
|
noun
- (chemistry) The simplest member of a class of compounds, from which the others are formally obtained by substituting radicals for hydrogen atoms.
|
| particulate |
|
noun
- any solid or liquid in a subdivided state, especially one that exhibits special characteristics which are negligible in the bulk material
- Particulates in engine oil can abrade moving parts.
- any solid or liquid suspended in air or free to suspend in air
adjective - comprise, Comprised of particles; as, particulate matter.
|
| passive |
|
adjective - Something that is not active, but rather is acted upon.
- (grammar) When the subject of a sentence has an action done to them.
- The form of "A meteorite hit the earth" is "The earth was hit by a meteorite."
- (slang) Remaining neutral or submissive during an event.
- He remained during the protest.
|
| PBB |
|
initialism
- polybrominated biphenyl
|
| PCB |
|
initialism
- (electronics) printed circuit board, also called electronics board.
- (organic chemistry) polychlorinated biphenyl.
- (context, informatics) program control block.
|
| PD |
|
initialism
- Police Department
- (electronics) Phase Detector.
- (Ireland) w:Progressive Democrats, Progressive Democrats (Political party)
|
| PDB |
|
initialism - President's Daily Briefing
- Protein Data Bank
|
| pectic acid |
|
noun
- an acidic derivative of a carbohydrate; the active constituent of pectin
- (chemistry) a helical polymer of αD-galacturonic acid
|
| pelargonic acid |
|
noun - (chemistry) an aliphatic carboxylic acid, CH3(CH2)7COOH, nonanoic acid, used in the manufacture of plastics, pharmaceuticals etc
|
| pentad |
|
noun
- a group or series of five things
|
| pentavalent |
|
adjective - (chemistry) having a valence of 5
|
| pentose |
|
noun
- (carbohydrate) A sugar or saccharide containing five carbon atoms.
- Ribose, found in RNA, is a common
|
| pentoxide |
|
noun - (chemistry) any oxide containing five oxygen atoms in each molecule
|
| perchlorate |
|
noun - (chemistry) any salt of perchloric acid; used in pyrotechnics and as powerful oxidizing agents
|
| perchloric acid |
|
noun - A clear colourless liquid; a strong acid and a violent, sometimes explosive, oxidizing agent
- (chemistry) HClO?4, the oxyacid of chlorine in which chlorine has the highest oxidation number
|
| perchloride |
|
noun - (chemistry) A chloride having a higher proportion of chlorine than any other chloride of the same substance or series.
|
| periodate |
|
noun - A salt of periodic acid.
|
| periodic acid |
|
noun (uncountable)
- (chemistry) HIO4, the oxyacid of iodine in which iodine has the highest oxidation number; it is a white crystalline substance, and a strong oxidizing agent
|
| periodic table |
|
noun
- (chemistry) A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same column.
Supplemental Details:
Periodic Table- A grid containing all the known elements on earth. The table was originally designed by Dimitri Mendeleev, in 1869. The grid lists elements by atomic number and atomic weight, in increasing order from left to right then down to the next row. Additionally the elements are grouped by their chemical properties in columns within the grid. The resulting grid, the Periodic Table, uses different rules for rows than columns and results in a grid where the 1st row contains 16 fewer columns than rows 4 thru 7. While the second and third rows have 10 empty columns.
Sponsor: www.You PeriodicTable.com
|
| permanganate |
|
noun
- (chemistry) any salt of permanganic acid, they are purple crystalline solids, mostly soluble in water; they are strong oxidizing agents
- (chemistry) potassium permanganate
|
| permanganic acid |
|
noun - (chemistry) the acid, HMnO?4, known only as its salts, the permanganates
|
| Pet. |
|
abbreviation (infl, en, abbreviation)
- (biblical) An abbreviation used for the epistles of Peter, books of the New Testament in the Bible.
|
| petrochemical |
|
noun - (chemistry) any compound derived from petroleum or natural gas
adjective
- Of or pertaining to the such compounds, or the industry that produces them
|
| petrochemistry |
|
noun - (chemistry) tha branch of chemistry that deals with petroleum, natural gas and their derivatives
|
| petrol |
|
noun
- (New Zealand) abbreviation of petroleum, a fluid consisting of a mixture of refined petroleum hydrocarbons, primarily consisting of octane, and commonly used as a motor fuel.
|
| petroleum |
|
noun (pl=petroleums or, rarely, petrolea)
- A flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under earth surface.
|
| PH |
|
abbreviation - Philippines
- public house
- Penthouse
- Preliminary Hearing
|
| phase |
|
noun
- That which is exhibited to the eye; the appearance which anything manifests, especially any one among different and varying appearances of the same object.
- Any appearance or aspect of an object of mental apprehension or view
- The problem has many phases.
- (astronomy) A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form, or the absence, of its enlightened disk; as, the phases of the moon or planets. Illustrated in W:Lunar phase, Wikipedia's article Lunar phase.
- Any one point or portion in a recurring series of changes, as in the changes of motion of one of the particles constituting a wave or vibration; one portion of a series of such changes, in distinction from a contrasted portion, as the portion on one side of a position of equilibrium, in contrast with that on the opposite side.
verb (phas, ing)
- (to phase out) To discontinue (doing) something over a period of time (i.e., in phases).
- (transitive) To stun or shock someone.
- (intransitive) To become stunned or shocked.
|
| phase diagram |
|
noun
- (physics),(chemistry) a graph, with axes representing temperature and pressure, showing the equilibrium conditions for a given substance to be a solid, liquid or gas
- a similar diagram for a binary mixture of substances, with axes representing composition and temperature
|
| phase rule |
|
noun (wikipedia, Gibbs' phase rule)
- (physics) the rule which states that the number of degrees of freedom in a system at equilibrium equals the number of components minus the number of phases plus 2
|
| phenanthrene |
|
noun - (organic compound) A tricyclic aromatic hydrocarbon obtained from coal tar; used in the manufacture of dyes, pharmaceuticals and explosives; it is isomeric with anthracene.
|
| phenazine |
|
noun - (chemistry) any of a class of aromatic tricyclic heterocycles used to make dyestuffs
|
| phenol |
|
noun
- (organic compound) A caustic, poisonous, white crystalline compound, C6H5OH, derived from benzene and used in resins, plastics, and pharmaceuticals and in dilute form as a disinfectant and antiseptic; once called carbolic acid.
- (organic chemistry) Any of a class of aromatic organic compounds having at least one hydroxyl group attached directly to the benzene ring.
|
| phenolate |
|
noun - (chemistry) phenoxide
|
| phenoxide |
|
noun - (chemistry) any metallic salt of a phenol
|
| phenyl |
|
noun
- (organic compound) A hydrocarbon radical (C6H5) regarded as the essential residue of benzene, and the basis of an immense number of aromatic derivatives.
|
| phlogiston |
|
noun
- (context, chemistry, historical) The hypothetical fiery principle formerly assumed to be a necessary constituent of combustible bodies and to be given up by them in burning.
|
| phosgene |
|
noun
- (inorganic compound) (alternative form of, carbonyl chloride)
- 2006, Thomas Pynchon, Against the Day, Vintage 2007, p. 265:
- :""Poison gas"?" A new one on Lew. But Dr. De Bottle had taken on a somber look. "Phosgene."
|
| phosphatic |
|
adjective
- of, relating to, or composed of phosphate
|
| phosphatize |
|
verb to phosphatize
- to convert something into a phosphate
- to treat something with phosphate or phosphoric acid
|
| phosphide |
|
noun - (chemistry) Any binary compound of phosphorus, especially one in oxidation state −3.
|
| phosphine |
|
noun - (chemistry, uncountable) a toxic gas; hydride of phosphorus, PH3
- (chemistry, countable) any alkyl or aryl derivative of this compound, PR3 (where at least one R is not H)
|
| phosphite |
|
noun - (chemistry) any salt or ester of phosphorous acid
- (chemistry) the anion PO33-, or the trivalent radical PO3
|
| phosphonium |
|
noun - (chemistry) the univalent H4P+ cation, derived from phosphane
|
| phosphorate |
|
verb to phosphorate
- to combine or treat with phosphorus; to phosphorize
|
| phosphoric |
|
adjective - (chemistry) Of or pertaining to phosphorus.
- Resembling phosphorus.
- (chemistry) Of a compound, containing phosphorus in a higher oxidation number than phosphorous compounds, especially with one of 5.
|
| phosphoric acid |
|
noun
- (inorganic compound) A colourless liquid, H3PO4, used in the manufacture of fertilizers, detergents and pharmaceuticals and as an additive in cola drinks.
|
| phosphorize |
|
verb to phosphorize
- to combine or treat with phosphorus; to phosphorate
|
| phosphorous |
|
adjective
- (chemistry) Of or pertaining to phosphorus.
- Resembling phosphorus.
- (chemistry) Of relating to or containing trivalent phosphorus.
|
| phosphorous acid |
|
noun - (chemistry) a yellowish hygroscopic solid, H3PO3; a mild reducing agent
|
| Phosphorus |
|
proper noun (or Phosphor)
- A name sometimes used for Hesperus, the personification in Greek mythology of the planet Venus.
- An ancient Greek name for the morning star (the planet Venus when it is visible in the eastern sky before sunrise).
|
| phosphorus pentoxide |
|
noun
- (chemistry) the compound, P2O5, formed by the spontaneous combustion of white phosphorus in air; it reacts violently with water to form phosphoric acid and is used as a powerful dessicating agent
|
| phosphureted |
|
adjective - (obsolete),(chemistry) treated, or reacted with phosphorus
|
| photocatalysis |
|
noun - (chemistry) catalysis by a photocatalyst
|
| photocathode |
|
noun - (physics) A cathode that emits electrons when exposed to light
|
| photochemistry |
|
noun - (chemistry) The study of photochemical reactions
|
| photodecomposition |
|
noun - (chemistry) Any photochemical reaction that results in the decomposition of a substance
|
| photodissociation |
|
noun - (chemistry) the dissociation of a molecule following the absorption of a photon
|
| photoisomerization |
|
noun - (chemistry) The formation of isomers via photoexcitation
|
| photolysis |
|
noun - (chemistry) Any chemical reaction in which a compound is decomposed after absorbing a photon
|
| photooxidation |
|
noun - (physics),(chemistry) The loss of an electron from a photoexcited species
- (chemistry) The reaction of something with oxygen in the presence of light
|
| photopolymer |
|
noun - (chemistry) Any polymer that reacts to light with a physical or chemical change, used especially for teeth fillings
|
| photoreduction |
|
noun - (physics),(chemistry) The addition of an electron to a photoexcited species
- (chemistry) Any reduction reaction that takes place in the presence of light
|
| phthalein |
|
noun - (chemistry) any of a range of compounds formed by the reaction of phenols with phthalic anhydride
|
| phthalic |
|
adjective - (chemistry) of, relating to, or derived from naphthalene or phthalic acid
|
| phthalic acid |
|
noun
- (organic compound) Any of three isomeric aromatic organic dicarboxylic acids, C6H4(COOH)2; especially the ortho- isomer manufactured from naphthalene, used in the synthesis of dyes, perfumes and other compounds.
|
| physical chemistry |
|
noun
- (context, chemistry, physics) The science that uses theories and techniques from physics to study chemical systems.
|
| physicochemical |
|
adjective
- Dependent on the joint action of both physical and chemical processes.
|
| picrate |
|
noun - (chemistry) any salt or ester of picric acid
|
| picric acid |
|
noun
- a toxic, yellow, explosive substance usd in dyes, explosives, and as an antiseptic
- (chemistry) 2,4,6-trinitrophenol, C6H2(NO2)3, prepared by the nitration of phenol or of aspirin
|
| piperonal |
|
noun - A white chrystalline powder with a floral odour, used in perfume
- (chemistry) The methylene ether of 3,4 diydroxy benzaldehyde; having a melting point of 37°C and boiling point of 263°C
|
| pipet |
|
noun
- A narrow glass tube, usually calibrated, used to transfer or measure the volume of a liquid by drawing it up into the tube by suction.
verb (pipett, ing)
- To transfer or measure the volume of a liquid using a pipet.
|
| pipette |
|
noun - A small glass tube, often with an enlargement or bulb in the middle, and usually graduated, used for transferring or delivering measured quantities of a liquid.
|
| pitch |
|
noun
- A sticky, gummy substance secreted by trees; sap.
- It is hard to get this off of my hand.
- A dark, extremely viscous material remaining in still after distilling crude oil and tar.
- They put on the mast to protect it. The barrel was sealed with .
- (baseball) The act of pitching a baseball.
- The was low and inside.
- (sports) The field on which cricket, soccer, rugby or hockey, field hockey is played.
- ''The teams met on the .
- An effort to sell or promote something.
- He gave me a sales .
- The distance between evenly spaced objects, e.g. the teeth of a saw or letters in a monospace font.
- The of pixels on the point scale is 72 pixels per inch.
- The of this saw is perfect for that type of wood.
- The angle at which an object sits.
- The of the roof or haystack, the propellor blades'
- More specifically, the rotation angle about the transverse axis.
- The of an aircraft
- (music) The perceived frequency of a sound or note.
- The of middle "C" is familiar to many musicians.
- (music) In an a cappella group, the singer responsible for singing a note for the other members to tune themselves by.
- Bob, our , let out a clear middle "C" and our conductor gave the signal to start.
- (aviation) A measure of the degree to which an aircraft's nose tilts up or down. Also a measure of the angle of attack of a propeller.
- (nautical) The measure of extent to which a nautical vessel rotates on its athwartships axis, causing its bow and stern to go up and down. Compare with roll and heave.
- The place where a busker performs is called their pitch.
- A level or degree.
- 1748. David Hume. Enquiries concerning the human understanding and concerning the principles of moral. London: Oxford University Press, 1973. § 11.
- : But, except the mind be disordered by disease or madness, they never can arrive at such a of vivacity
verb (pitch, es)
- (transitive) To throw.
- He pitched the horseshoe.
- (context, baseball, transitive, or, intransitive) To throw (the ball) toward home plate.
- (i, transitive) The hurler pitched a curveball.
- (i, intransitive) He pitched high and inside.
- (context, baseball, intransitive) To play baseball in the position of pitcher.
- Bob pitches today.
- (transitive) To throw away; discard.
- He pitched the candy wrapper.
- (transitive) To promote, advertise, or attempt to sell.
- He pitched the idea for months with no takers.
- (transitive) To assemble or erect (a tent).
- Pitch the tent over there.
- (context, of, _, ships, and, aircraft, transitive, or, intransitive) To move so that the front of the craft goes alternatively up and down.
- (i, transitive) The typhoon pitched the deck of the ship.
- (i, intransitive) The airplane pitched.
- (context, golf, transitive) To play a short, high, lofty shot that lands with backspin.
- The only way to get on the green from here is to pitch the ball over the bunker.
- (context, cricket, intransitive) To bounce on the playing surface.
- The ball pitched well short of the batsman.
- (context, Bristolian dialect, of snow, intransitive) To settle and build up, without melting.
adjective
- Completely dark or black; like tar.
- The room was black.
|
| plastic |
|
noun
- A stiff but usually slightly flexible synthetic material, generally consisting of a hydrocarbon-based polymer.
- Any similar synthetic material.
- (slang) credit card, credit or debit cards used in place of cash to buy goods and services.
adjective
- Of or pertaining to the inelastic, non-brittle, deformation of a material.
- Capable of adapting to varying conditions: ecologically plastic animals,see Charles Darwin: Origin of Species.
- Constructed of plastic.
- Inferior or not the real thing; ersatz (italbrac, especially when made of plastic instead of an alterate material).
|
| platinic |
|
adjective - (chemistry) containing tetravalent platinum
|
| platinous |
|
adjective - (chemistry) containing divalent platinum
|
| platinum |
|
noun
- The metallic chemical element with atomic number 78 and symbol Pt.
- A whitish grey colour, like that of the metal.
- <table><tr><td>platinum colour: </td><td bgcolor="
- 848482" width="80"> </td></tr></table>
adjective
- Of a whitish grey colour, like that of the metal.
- Of a musical recording that has sold over one million copies (for singles), or two million (for albums).
|
| plumbic |
|
adjective - (chemistry) Of, pertaining to, resembling or containing lead.
- (chemistry) Specifically, of compounds in which it has a higher valence as contrasted with plumbous compounds.
|
| plumbiferous |
|
adjective
- Producing or containing lead.
|
| plumbous |
|
adjective - (chemistry) Of, pertaining to, resembling or containing lead.
- (chemistry) Specifically, of compounds in which it has a lower valence as contrasted with plumbic compounds.
|
| PM |
|
initialism
- post meridiem - The second half of the day, from noon (12:00:00) to (just before) midnight (23:59:59)
- post mortem
- prime minister, prime minister
- Private message
- Price Match
|
| poison |
|
noun
- A substance that is harmful or lethal to a living organism.
- We used a to kill the weeds.
- Something that harms a person or thing.
- Gossip is a malicious .
- (idiomatic) A drink; liquor.
verb
- (transitive) To use poison to kill or paralyse somebody
- : The assassin poisoned the king.
- (transitive) To pollute; to cause some part of the environment to become poisonous
- : That factory is poisoning the river.
- (transitive) To cause something to become much worse
- : Suspicion will their relationship.
- : He poisoned the mood in the room with his non-stop criticism.
- (transitive) To cause someone to hate or to have unfair negative opinions
- : She's poisoned him against all his old friends.
|
| pol |
|
noun
- A politician.
|
| polar |
|
adjective
- of, relating to, measured from, or referred to a geographic pole (the North Pole or South Pole)
- of an orbit that passes over, or near, one of these poles
- (chemistry) having a dipole; ionic
- (mathematics) of a coordinate system, specifying the location of a point in a plane by using a radius and an angle
|
| polonium |
|
noun
- a chemical element (symbol Po) with atomic number 84.
|
| polyacid |
|
adjective
- (chemistry) Capable of neutralize, neutralizing, or of combining with, several molecules of a monobasic acid; having more than one hydrogen atom capable of being replaced by acid radicals; -- said of certain bases; as, calcium hydrate and glycerin are polyacid bases.
|
| polyacrylamide |
|
noun
- (organic compound) Any of a range of cross-linked polymers of acrylamide; used to form soft gells for making contact lenses etc.
|
| polyamide |
|
noun - (chemistry) Any of a range of polymers containing amide (or peptide) repeat units; examples include proteins and nylon
|
| polyamine |
|
noun - (chemistry) any compound having many (more than three) amino functional groups
|
| polyatomic |
|
adjective - (chemistry) (of a molecule or ion) consisting of three or more atoms
|
| polybasic |
|
adjective - (chemistry) (of an acid) containing two or more replaceable hydrogen atoms
- (chemistry) (of a salt) having two or more atoms of a univalent metal
- (chemistry) (of a base) Having two or more basic groups; see also polybase
|
| polycarbonate |
|
noun - (chemistry) Any of a range of polymers of aromatic carbonates; they are used to make light, flexible alternatives to glass. Abbreviation: PC
|
| polychlorinated biphenyl |
|
noun (abbreviation PCB)
- (organic chemistry) A class of aromatic organic compounds formed by the chlorination of the hydrocarbon biphenyl; they have many industrial applications but are damaging to the environment.
|
| polycyclic |
|
adjective - (chemistry) Having two or more rings of atoms in the molecule.
|
| polyelectrolyte |
|
noun
- A polymeric electrolyte (such as a protein)
|
| polyene |
|
noun - (chemistry) An organic compound containing several double bonds, especially one containing a sequence of many alternating single and double bonds
|
| polyester |
|
noun - Any polymer whose monomers are linked together by ester bonds
- A material or fabric made from polyester polymer
adjective - Of, or consisting of polyesters
|
| polyether |
|
noun - (chemistry) a polymer, such as an elastomer, in which carbon atoms of the repeating units are joined by a single oxygen atom
|
| polyethylene |
|
noun - (organic compound) A polymer consisting of many ethylene monomers bonded together; used for kitchenware, containers etc.
|
| polyhydric |
|
adjective - (chemistry) containing two or more hydroxy groups
|
| polyhydroxy |
|
adjective
- (organic chemistry) Having three or more hydroxy functional groups.
|
| polyimide |
|
noun - (chemistry) Any polymer whose monomers are imides; used to make high-temperature resins
|
| polymer |
|
noun
- (chemistry) A long molecule consisting of a chain of identical parts, called monomers. A polymer is formed by polymerization, the joining of identical molecules.
|
| polymeric |
|
adjective - (chemistry) of, relating to, or consisting of a polymer
|
| polymerism |
|
noun
- (chemistry) The state, quality, or relation of two or more polymeric substances.
- (chemistry) The act or process of forming polymers.
|
| polymerization |
|
noun
- (chemistry) The chemical process, normally with the aid of a catalyst, to form a polymer by bonding together multiple identical units (monomers).
|
| polymerize |
|
verb (polymeriz, es)
- (transitive, chemistry) to convert a monomer to a polymer by polymerization
- (intransitive, chemistry) to undergo polymerization
|
| polymethyl methacrylate |
|
noun
- (organic compound) A thermoplastic transparent plastic manufactured by the polymerization of methyl methacrylate, often used in place of glass - it being lighter, softer and not shattering on impact.
|
| polyol |
|
noun
- (organic chemistry) Any organic compound having three or more hydroxyl functional groups.
|
| polyphenol |
|
noun - (chemistry) any of a large class of organic compounds, of plant origin, having more than one phenol group; they tend to be colourful and to have antioxidant properties
|
| polypropylene |
|
noun (rfc-level, Noun at L4+ not in L3 POS section)
- a thermoplastic resin made by the polymerization of propylene - used for films, fibres, or moulding materials. Also known as polypropene
|
| polyprotic |
|
adjective - (chemistry) Of an acid (or a base) that can donate (or accept) more than one proton; polybasic
|
| polysaccharide |
|
noun
- (organic chemistry, biochemistry) A polymer made of many saccharide units linked by glycosidic bonds.
- cellulose, Cellulose, starches, and complex carbohydrates, such as glycogen, are common polysaccharides in biology,
|
|
| polysulfide |
|
noun - (chemistry) any compound of general formula RSnR having a chain of more than two sulfur atoms; any derivative of a polysulfane
|
| polytetrafluoroethylene |
|
noun (abbreviated as PTFE)
- a tough synthetic resin used to make seals and bearings and to create a nonstick coating on cooking utensils.
|
| polythene |
|
noun - (context, organic compound, mostly, British) A light thermoplastic used in packaging etc.; polyethylene.
|
| polyurethane |
|
noun
- (organic chemistry) Any of various polymeric resins containing urethane links; used in very many industrial and domestic applications.
|
| polyvalent |
|
adjective - (chemistry) Having a high valence, especially more than three
- (chemistry) Having multiple valencies
- (biology) Containing antibodies to more than one kind of pathogen
|
| polyvinyl |
|
adjective - (chemistry) designating any polymer derived from a vinyl compound
|
| polyvinyl chloride |
|
noun (abbreviation PVC)
- A thermoplastic resin produced by the polymerization of vinyl chloride; used as an electrical insulator and in many other applications
|
| positive |
|
noun
- A thing capable of being affirmed; something real or actual.
- A favourable point or characteristic.
- Something having a value in physics, such as an electric charge.
- (grammar) An adjective or adverb in the degree.
- (context, photography) A image; one that displays true colors and shades, as opposed to a negative.
adjective
- Definitively laid down; explicitly stated; clearly expressed, precise, emphatic.
- Bacon:
- : Positive words, that he would not bear arms against King Edward"s son.
- Fully assured, confident; certain.
- I"m absolutely you've spelt that wrong.
- Overconfident, dogmatic.
- Pope:
- : Some , persisting fops we know, That, if once wrong, will needs be always so.
- (grammar) Describing the primary sense of an adjective or adverb; not comparative or superlative.
- "Better" is an irregular comparative of the form "good".
- Derived from an object by itself; not dependent on changing circumstances or relations; absolute.
- The idea of beauty is not , but depends on the different tastes of individuals.
- Wholly what is expressed; colloquially downright, entire, outright.
- Good lord, you've built up a arsenal of weaponry here.
- Characterised by the existence or presence of qualities or features, rather than by their absence.
- The box was not empty " I felt some substance within it.
- Characterised by the presence of features which support a hypothesis.
- The results of our experiment are .
- Characterised by affirmation, constructiveness, or influence for the better; favourable.
- He has a outlook on life.
- The first-night reviews were largely .
- Swift:
- : a voice in legislation.
- (context, chiefly, philosophy) actual, Actual, real, concrete.
- Bacon:
- : Positive good.
- (photography) Of a visual image, true to the original in light, shade and colour values.
- A photograph can be developed from a photographic negative.
- (physics) Having more protons than electrons.
- A cation is a positive ion as it has more protons than electrons.
- (slang) HIV positive.
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| potash |
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noun
- the water-soluble part of the ash formed by burning plant material; used for making soap, glass and as a fertilizer
- (chemistry) an impure form of potassium carbonate (K2CO3) mixed with other potassium salts
- (chemistry) (archaic) in the names of compounds of the form "... of potash", potassium (for example, "permanganate of potash" = potassium permanganate)
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| potassa |
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noun
- a trivial name for chemical compound potassium hydroxide.
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| potassic |
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adjective - (chemistry) containing potassium
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| potassium |
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noun
- a soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol K) with an atomic number of 19 and atomic weight of 39.0983. The symbol is derived from the Latin kalium.
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| potassium nitrate |
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noun - (chemistry) the potassium salt of nitric acid, KNO3; used in the production of nitric acid, as a food preservative, and is used in toothpaste for sensitive gums
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| potassium permanganate |
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noun - (chemistry) KMnO?4, the most readily available commercial permanganate; it is used as an oxidizing agent both in industry and in the analytical laboratory
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| PR |
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abbreviation
- (geography) Puerto Rico (US postal abbreviation)
initialism
- public relations
- proportional representation
- Police Report
- Personal Representative
- Personal Recognizance (bond)
- Port Rebublic, (New Jersey)
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| precipitate |
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noun verb adjective |
| product |
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noun
- a commodity offered for sale.
- That store offers a variety of products.
- The amount of an artifact that has been created by someone or some process.
- They improve their every year; they export most of their agricultural production.
- A consequence of someone's efforts or of a particular set of circumstances.
- Skill is the of hours of practice; His reaction was the of hunger and fatigue.
- A chemical substance formed as a result of a chemical reaction.
- This is a of lime and nitric acid.
- (math) A quantity obtained by multiplication.
- The of 2 and 3 is 6.
- The set of elements common to two or more sets.
- The set of red hats is the of the set of hats and the set of red things.
- Any tangible output or service that is a result of a process and that is intended for delivery to a customer or end user.
- A is a work product that is delivered to the customer. CMMI®
- The outcome or 'thingness' of an activity, especially in contrast to a process by which the product was created or altered.
- This of last month's quality standards committee is quite good, even though the process was flawed.
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| promethium |
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noun
- a metallic chemical element (symbol Pm) with an atomic number of 61.
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| propane |
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noun
- (organic compound) An aliphatic hydrocarbon, C3H8, a constituent of natural gas.
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| propanoic acid |
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noun
- A colourless liquid with a sharp unpleasant odour; produced by the bacterial breakdown of fatty acids and therefore found in sweat and some cheese.
- (organic compound) The short chain aliphatic carboxylic acid, CH3CH2COOH, used as a preservative, and in the manufacture of many chemical compounds.
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| propellant |
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noun
- anything that propels
- a fuel or oxidizer for an engine, especially one for a rocket that provides thrust by explosive chemical reaction
- the compressed gas in an aerosol container
adjective
- capable of propelling
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| propene |
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noun
- (organic compound) The official IUPAC name for the organic chemical compound propylene. An alkene which is a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C3H6.
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| propionate |
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noun
- (organic compound) Any salt or ester of propionic acid; used as food preservatives.
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| propyl |
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noun - The hypothetical radical C3H7?, regarded as the essential residue of propane and related compounds.
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| propylene |
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noun
- (organic compound) The common name for the organic chemical compound propene. An alkene which is a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C3H6.
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| propylene glycol |
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noun - (chemistry) 1,2-propanediol, CH3CH(OH)CH2OH, a thick oily liquid, used as an antifreeze and in many industrial applications
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| protium |
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noun - (isotope) the lightest and most common isotope of hydrogen, having a single proton and no neutrons - (nuclide, 1, 1, H)
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| protoxide |
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noun - (obsolete),(chemistry) the oxide of a particular element (that has multiple oxides) having the smallest proportion of oxygen
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| Prussian blue |
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noun
- (chemistry) an insoluble dark, bright blue pigment of KFeFe?(CN)6,H2O, potassium ferrous ferricyanide
- (colour) a moderate to rich blue colour, tined with deep greenish blue.
- ,
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| prussiate |
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noun - (chemistry) (obsolete) A ferricyanide, ferrocyanide or cyanide
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| prussic |
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adjective
- derived from Prussian blue
- of, or derived from prussic acid; hydrocyanic
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| prussic acid |
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noun - (chemistry) (obsolete) hydrocyanic acid
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| PT |
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initialism
- Pacific Time
- Part-Time
- (medicine) Physical Therapist/Therapy
- Parenting-Time
- Prothrombin Time
- pressure treated
- physical training
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| PVA |
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initialism - patterned vertical alignment
- (also PVAc) polyvinyl acetate
- (also PVAL or PVOH) polyvinyl alcohol
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| PVC |
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initialism - polyvinyl chloride
- Premature Ventricular Contraction (of the heart.)
Translations
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| pycnometer |
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noun - (physics) a vessel used to determine the specific gravity of a liquid; a specific gravity bottle
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| pyran |
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noun - (chemistry) Any of a class of heterocyclic compounds containing a ring of five carbon atoms and an oxygen atom; especially the simplest one, C5H6O.
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| pyrene |
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noun - (chemistry) A polycyclic aromatic hydrocarbon containing four fused benzene rings; first isolated from coal tar
- (botany) the stone of a drupe
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| pyridine |
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noun - (chemistry) Any of a class of aromatic heterocyclic compounds containing a ring of five carbon atoms and an nitrogen atom; especially the simplest one, C5H5N.
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| pyro- |
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prefix (pyr- before a vowel or h)
- fire, heat.
- fever.
- (chemistry) ortho acid.
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| pyroborate |
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noun - (chemistry) any salt of pyroboric acid
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| pyrocatechol |
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noun
- (organic compound) A dihydric phenol, benzene-1,2-diol, present in some tars.
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| pyrocellulose |
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noun
- nitrocellulose (cellulose nitrate) used in the manufacture of smokeless powder
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| pyrochemical |
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adjective - (chemistry) of, related to, or produced by chemical reactions at elevated temperatures
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| pyrogallate |
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noun - (chemistry) any salt of the phenol pyrogallol when viewed as an acid
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| pyroligneous |
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adjective
- produced from wood by the action of heat, especially by destructive distillation
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| pyroligneous acid |
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noun - (chemistry) a dark liquid, produced by the destructive distillation of wood, containing acetic acid, methanol, oils and tars; once used as a commercial source of acetic acid
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| pyrolysis |
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noun (pyrolyses)
- (context, chemistry, physics) The decomposition of a material or compound due to heat.
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| pyrophoric |
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adjective - spontaneous, spontaneously ignite, igniting in air, especially when in a finely divided state
- producing sparks, especially by friction
- (fire investigation) Able to oxidize with expose, exposure to atmosphere, atmospheric oxygen at normal temperature, temperatures.
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| pyrophosphate |
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noun
- (inorganic chemistry) Any salt or ester of pyrophosphoric acid.
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| pyrophosphoric acid |
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noun
- A syrupy liquid formed by the dehydration of phosphoric acid; its salts, the pyrophosphates, are used in medicine.
- (inorganic compound) The acid formed by removing a molecule of water from two molecules of phosphoric acid, H4P2O7; this reaction slowly reverses in the presence of water.
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| pyrosulfate |
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noun
- (inorganic compound) Any salt of pyrosulfuric acid.
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| pyrosulfuric |
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adjective
- of, or relating to pyrosulfuric acid or its derivatives
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| pyrosulfuric acid |
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noun
- (inorganic compound) The acid, H2S2O7, formed by the reaction of sulfur trioxide with sulfuric acid; used in the manufacture of explosives etc.
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| pyrotechnic |
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noun
- of, or relating to fireworks
- of, or relating to the use of fire in chemistry or metallurgy
- resembling fireworks
- of, or relating to pyrotechny
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| pyrotechnics |
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noun
- The art and technology of fireworks and related military applications.
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| pyroxylin |
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noun
- (organic compound) A highly inflammable form of nitrocellulose; used in the manufacture of collodion and lacquers.
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| pyrrole |
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noun
- (organic chemistry) Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and an nitrogen atom; especially the simplest one, C4H5N.
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| pyrrolidine |
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noun - (chemistry) any of a class of heterocyclic amines having a saturated five-membered ring; especially the parent compound of this class, C4H9N
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