| rapid eye movement |
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noun (uncountable)
- Rapid movement of the eyes, characterising REM sleep.
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| reaction |
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noun
- An action or statement in response to a stimulus or other event
- The announcement of the verdict brought a violent .
- You were in the coutroom. What is your ?
- When I last tried to eat strawberries I had a terrible allergic .
- (chemistry) A transformation in which one or more substances is converted into another by combination or decomposition
- In this , the acid and base will neutralize each other, producing a salt.
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| red blood cell |
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noun
- (cytology) A type of cell in the blood of vertebrates that contains haemoglobin and transports oxygen from the lungs to the tissues; an erythrocyte.
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| reflex |
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noun
- An automatic response to a simple stimulus which does not require mental processing.
- (linguistics) A corresponding phoneme in a daughter language.
verb to reflex
- to bend, turn back or reflect
- to respond to a stimulus
adjective
- bent, turned back or reflected
- produced automatically by a stimulus
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| reflex arc |
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noun
- (anatomy) , (psychology) The pathway mediation, mediating a reflex.
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| REM |
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noun rem or
- (computing) A programming language statement used for documentation (in BASIC for example); also used in DOS batch files.
initialism or R.E.M. or rem
- rapid eye movement
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| REM sleep |
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noun or R.E.M. sleep (uncountable)
- The part of sleep during which a person dreams, characterised by rapid eye movement (REM).
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| respiration |
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noun (wikipedia, respiration (physiology))
- the process of inhaling and exhaling; breathing, breath
- any similar process, in organisms that lack lungs, that exchanges gases with its environment
- the process by which cells obtain chemical energy by the consumption of oxygen and the release of carbon dioxide
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| respiratory |
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adjective
- Relating to respiration; breathing.
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| respire |
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verb (respir, ing)
- (intransitive) To breathe in and breath out, out
- (intransitive) To engage in the process of respiration
- (intransitive) To recover one's breath or breathe easily following stress
- (transitive) To inhale and exhale); to breathe
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| respond |
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noun
- A response.
- A versicle or short anthem chanted at intervals during the reading of a lection.
- (architecture) A half-pillar, pilaster, or any corresponding device engaged in a wall to receive the impost of an arch.
verb
- (intransitive) To say something in return; to answer; to reply.
- (intransitive) To act in return; to exhibit some action or effect in return to a force or stimulus; to do something in response; to accord.
- (intransitive) To correspond; to suit.
- (transitive) To satisfy; to answer.
- The prisoner was held to the judgment of the court.
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| responsive |
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adjective
- answering, Answering, replying or responding.
- Able to receive and respond to external stimuli.
- Using antiphons; antiphonal.
- susceptible, Susceptible to the feelings of others.
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| retch |
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verb (retches, retching, retched)
- To make an effort to vomit; to strain, as in vomiting.
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| rete |
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noun (plural retia)
- (anatomy) a network of blood vessels or nerves
- an anatomical part resembling or including a network
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| rictus |
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noun (rictus, es)
- A bird's gaping mouth
- Any open-mouthed expression
- his face was a of sheer delight
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| rigor |
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noun - US spelling of rigour.
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| rigor mortis |
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noun
- Temporary stiffness of a body's muscles and joints following death.
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| rise |
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noun
- The action of moving upwards
- An increase (in a quantity, price, etc)
- (UK, Ireland) A pay rise (rfv-sense)
verb (rises, rising, rose, risen)
- (intransitive) To move upwards.
- We watched the balloon .
- (intransitive, of a celestial body) To appear to move upwards from behind the horizon of a planet as a result of the planet's rotation
- The sun was rising in the East.
- (intransitive) To be resurrected
- He rose from the grave.
- He is risen!
- (intransitive) of a quantity, price, etc, To increase.
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