AskDefine | Define reaction

Dictionary Definition

reaction

Noun

1 a response that reveals a person's feelings or attitude; "he was pleased by the audience's reaction to his performance"; "John feared his mother's reaction when she saw the broken lamp"
2 a bodily process occurring due to the effect of some foregoing stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age" [syn: response]
3 (chemistry) a process in which one or more substances are changed into others; "there was a chemical reaction of the lime with the ground water" [syn: chemical reaction]
4 an idea evoked by some experience; "his reaction to the news was to start planning what to do"
5 doing something in opposition to another way of doing it that you don't like; "his style of painting was a reaction against cubism"
6 extreme conservatism in political or social matters; "the forces of reaction carried the election"
7 (mechanics) the equal and opposite force that is produced when any force is applied to a body; "every action has an equal and opposite reaction"

User Contributed Dictionary

English

Etymology

From re-, again, + action, from Latin actio, noun of action form from perfect passive participle actus, done, from verb agere, do.

Pronunciation

Extensive Definition

A reaction is usually any response caused by some other event:
The word Reaction may also refer to:
reaction in Czech: Reakce
reaction in German: Reaktion
reaction in Estonian: Reaktsioon
reaction in Spanish: Reacción
reaction in Esperanto: Reakcio
reaction in French: Réaction
reaction in Galician: Reacción
reaction in Dutch: Reactie
reaction in Japanese: 反応
reaction in Polish: Reakcja
reaction in Portuguese: Reação
reaction in Romanian: Reacţie
reaction in Russian: Реакция
reaction in Simple English: Reaction
reaction in Finnish: Reaktio
reaction in Ukrainian: Реакція
reaction in Chinese: 反應

Synonyms, Antonyms and Related Words

Bourbonism, Toryism, acknowledgment, action and reaction, aeromotor, affect, affection, answer, answering, antagonism, antipathy, antiphon, assumption, attitude, back answer, back talk, backchat, backlash, backset, backsliding, backward motion, backward step, backwardness, backwash, brain disease, challenge, clashing, climate of opinion, clout, collision, combative reaction, comeback, common belief, community sentiment, compensation, complaint, conceit, concept, conception, conclusion, conflict, confutation, consensus gentium, conservatism, conservativeness, consideration, contradiction, contraposition, contrariety, counteraction, counterbalance, counterposition, counterworking, crack-up, crankiness, crotchetiness, defiance, demur, die-hardism, dispute, dissent, dissentience, echo, effect, emotion, emotional charge, emotional disorder, emotional instability, emotional shade, estimate, estimation, ethos, evasive reply, experience, extreme right, extreme right wing, extreme rightism, eye, feedback, feeling, feeling tone, force, foreboding, fractiousness, friction, functional nervous disorder, general belief, gut reaction, heartthrob, idea, impact, impress, impression, imprint, insanity, interference, jet power, jet propulsion, judgment, kick, know-nothingism, laissez-faireism, lapse, lights, maladjustment, manic-depressive psychosis, mark, melancholia, mental disorder, mental illness, mind, monarchism, mystique, negativism, nervous breakdown, nervous disorder, neurosis, nonconformity, noncooperation, notion, objection, observation, obstinacy, old school tie, opinion, opposition, opposure, oppugnance, oppugnancy, paranoia, passion, passive resistance, personal judgment, personality disorder, perverseness, point of view, popular belief, position, posture, power plant, presentiment, presumption, prevailing belief, print, problems in living, profound sense, protest, psychosis, public belief, public opinion, radical rightism, ram-jet propulsion, reaction propulsion, reactionariness, reactionaryism, ready reply, rebuff, recalcitrance, recalcitrancy, recalcitration, receipt, recession, recidivation, recidivism, reciprocation, recoil, reentry, reflex, refluence, reflux, refractoriness, regress, regression, rejoinder, relapse, reluctance, remonstrance, renitence, renitency, repartee, repellence, repellency, repercussion, replication, reply, repost, reprisal, repugnance, repulse, repulsion, rescript, rescription, resistance, resojet propulsion, respondence, response, responsion, responsory, retaliation, retort, retroaction, retrocession, retroflexion, retrogradation, retrogression, retrusion, return, revenge, reverberation, revolt, rightism, riposte, rocket power, rocket propulsion, rollback, royalism, schizophrenia, sensation, sense, sentiment, setback, short answer, sight, snappy comeback, social Darwinism, social maladjustment, stance, stand, standpattism, sternway, swimming upstream, theory, thinking, thought, throwback, turbojet propulsion, ultraconservatism, uncooperativeness, undercurrent, unprogressiveness, view, way of thinking, withstanding, witty reply, witty retort, yes-and-no answer
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