| valence electron |
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noun
- (chemistry) any of the electrons in the outermost shell of an atom; capable of forming bonds with other atoms
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| valency |
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noun - (graphtheory) The number of edges connected to a vertex in a graph
- (chemistry) (mostly British) valence
- (linguistics) The capacity of a verb to take a specific number of arguments
(wikipedia, valency (linguistics))
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| valeric acid |
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noun
- (chemistry) a short chain aliphatic carboxylic acid, CH3(CH2)3COOH, obtained from the roots of valerian; used in perfume, flavourings, pharmaceuticals
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| vanadate |
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noun - (chemistry) any salt of vanadic acid
- (chemistry) any of the corresponding anions, VO3, VO4, or V2O7
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| vanadic acid |
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noun - (chemistry) any of various hydrated forms of vanadium pentoxide
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| vanadium |
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noun
- A chemical element , (symbol V) with an atomic number of 23; it is a transition metal, used in the production of specialist steels.
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| vanadium pentoxide |
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noun (wikipedia, Vanadium(V) oxide)
- (chemistry) an orange crystalline powder, V2O5, used as a catalyst in the production of sulphuric acid etc.
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| vanillin |
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noun - The name of a chemical compound, 4-hydroxy-3-methoxybenzaldehyde, which is the primary constituent of vanilla.
- Synthetic compound used as a substitute for the extract of the vanilla bean.
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| varnish |
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noun - A type of paint with a solvent that evaporates to leave a hard, transparent, glossy film.
- Anything resembling such a paint.
- By extension: A deceptively showy appearance.
verb (varnish, es)
- (intransitive) To apply varnish.
- (transitive) To cover up with varnish.
- (transitive) To gloss over a defect.
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| Venus |
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proper noun
- (Roman mythology) the goddess of love, beauty, and natural productivity
- The second planet in our solar system, named for the goddess; represented in astronomy and astrology by �.
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| VI |
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abbreviation
- US Virgin Islands
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| vinyl |
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noun - (context, chemistry, uncountable) The univalent radical CH2=CH−, derived from ethylene
- (countable) Any of various compounds and substances containing the vinyl radical, especially various tough, flexible, shiny plastics
- (context, collectively, uncountable) phonograph record, Phonograph records as a medium
- Many DJs prefer vinyl to CDs.
adjective - (chemistry) containing the vinyl radical
- Made of polyvinyl chloride.
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| vinyl chloride |
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noun - (chemistry) A colourless gas, CH2=CHCl, used in the manufacture of the plastic polyvinyl chloride
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| viscose |
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noun
- A viscous orange-brown liquid obtained by chemical treatment of cellulose and used as the basis of manufacturng rayon and cellulose film.
- A fabric made from this material.
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| vitriol |
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noun
- (dated) sulphuric acid and various metal sulphates
- (context, by extension) bitterly abusive language; invective or vituperation
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| vitriolic |
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adjective
- of, derived from, or similar to a vitriol
- bitterly scathing; caustic: vitriolic criticism
- (chemistry): Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste.
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| volatile |
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adjective
- (physics) evaporating or vaporizing readily under normal conditions
- (chemistry) (informal) explosive
- (context, of a price etc) variable or erratic
- fickle
- temporary or ephemeral
- (context, of a situation) potentially violent
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| vulcanize |
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verb (vulcanizes, vulcanizing, vulcanized, vulcanized)
- To treat rubber with heat and (usually) sulphur to harden it and make it more durable.
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