reaction

reaction
re|ac|tion [ ri`ækʃn ] noun ***
▸ 1 how you react to something
▸ 2 bad effect on body
▸ 3 ability to act quickly
▸ 4 opposition to past ways
▸ 5 chemical change
▸ 6 opposition to change
1. ) count the way you feel or behave as a result of something that happens:
My mother's initial reaction was quite unexpected.
My parents were pretty surprised at my reaction.
reaction from/of someone: The reaction from the local community was very negative.
someone's reaction is to do something: Their reaction to the report was to ban trade with those countries.
mixed reaction (=one in which people reacted differently): The Fed chairman's plan received a mixed reaction on Wall Street last night.
a ) usually singular a sudden feeling of being tired, upset, etc., for example after an unpleasant or exciting experience:
The reaction of any individual trauma victim is difficult to predict.
reaction to: Shock is a natural reaction to such bad news.
=> KNEE-JERK
2. ) count a bad effect on your body caused by food, medicine, or another substance:
reaction to: Some people's skin has an allergic reaction to certain types of fabric.
have/suffer a reaction: He suffered a violent reaction to the medicine.
3. ) reactions plural your ability to think and act quickly in a difficult or dangerous situation:
A tragedy was only prevented by the driver's quick reactions.
4. ) singular an attitude of wanting to do things in a different way from the way they were done in the past:
reaction against: The reaction against traditional styles continued for another 50 years.
5. ) count SCIENCE a process in which a chemical change happens:
Temperature can affect the rate of a chemical reaction.
reaction between: We are studying reactions between a number of metals and acids.
a ) count or uncount SCIENCE a physical force that is caused by an opposite physical force, usually producing a form of energy:
a nuclear reaction
Newton teaches that action and reaction are equal and opposite.
=> CHAIN REACTION
6. ) uncount FORMAL strong opposition to any social or political change: CONSERVATISM:
the forces of reaction

Usage of the words and phrases in modern English. 2013.

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Synonyms:
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Look at other dictionaries:

  • réaction — [ reaksjɔ̃ ] n. f. • 1690; de re et action I ♦ Sc. 1 ♦ Mécan. Force qu un corps agissant sur un autre détermine en retour chez celui ci. Principe de l égalité de l action et de la réaction (énoncé par Newton) :un corps qui exerce sur un autre une …   Encyclopédie Universelle

  • Reaction — Réaction Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom …   Wikipédia en Français

  • Reaction — Re*ac tion (r[ e]*[a^]k sh[u^]n), n. [Cf. F. r[ e]action.] 1. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action. [1913 Webster] 2. (Chem.) The mutual or reciprocal action of chemical …   The Collaborative International Dictionary of English

  • Réaction! — Réaction ! Réaction ! Saison 1 Épisode n°16 Titre original The Peanut Reaction Code de production 116 1e diffusion aux É. U. 12 mai 2008 …   Wikipédia en Français

  • Réaction ! — Réaction ! Saison 1 Épisode n°16 Titre original The Peanut Reaction Code de production 116 1e diffusion aux É. U. 12 mai 2008 …   Wikipédia en Français

  • reaction — Since the later part of the 20c reaction has been used to mean little more than ‘first impression’ or ‘initial response’: • ‘I became more and more infatuated with that image as I grew older,’ Rowan said and looked at me for some kind of reaction …   Modern English usage

  • reaction — (n.) 1610s, from RE (Cf. re ) again, anew + ACTION (Cf. action) (q.v.). Modeled on Fr. réaction, older It. reattione, from M.L. reactionem (nom. reactio), from L.L. react , pp. stem of reagere react, from re …   Etymology dictionary

  • reaction — I (opposition) noun backfire, backlash, challenge, clash, conflict, contradiction, contrariety, countertendency, differences, disagreement, disapprobation, discountenance, expression of disapproval, objection, offset, polarity, protest, rebound,… …   Law dictionary

  • reaction — [n1] response acknowledgment, answer, attitude, backfire, backlash, back talk*, boomerang*, comeback, compensation, counteraction, counterbalance, counterpoise, double take*, echo, feedback, feeling, hit, kick, kickback, knee jerk*, lip*, opinion …   New thesaurus

  • Reaction — (v. lat.), 1) so v.w. Gegenbewegung, Gegendruck, Gegenwirkung, d.h. eine rückwirkende Thätigkeit, welche überall stattfindet, wo entgegengesetzte Kräfte einander entgegen wirken u. sich ins Gleichgewicht zu setzen suchen. 2) Die Erscheinung, daß… …   Pierer's Universal-Lexikon

  • Reaction — Reaction, Gegenwirkung, Gegenbewegung …   Damen Conversations Lexikon

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