Definitions

from The American HeritageĀ® Dictionary of the English Language, 4th Edition

  • intransitive v. To act in response to or under the influence of a stimulus or prompting: reacted strongly to the sarcastic tone of the memorandum.
  • intransitive v. To act in opposition to a former condition or act: composers who reacted against romanticism.
  • intransitive v. To act reciprocally or in return.
  • intransitive v. Chemistry To undergo a reaction: Methane reacts with hydroxyl to produce formaldehyde.
  • transitive v. Chemistry To cause (a substance or substances) to undergo a reaction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To act or perform a second time; to do over again; as, to react a play; the same scenes were reacted at Rome.
  • v. To return an impulse or impression; to resist the action of another body by an opposite force; as, every body reacts on the body that impels it from its natural state.
  • v. To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

from the GNU version of the Collaborative International Dictionary of English

  • transitive v. To act or perform a second time; to do over again; to reenact
  • intransitive v. To return an impulse or impression; to resist the action of another body by an opposite force.
  • intransitive v. To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

from The Century Dictionary and Cyclopedia

  • To act or perform anew; reenact: as, to react a play.
  • To exert, as a thing acted upon, an opposite action upon the agent.
  • To act, after being acted upon, in a manner directly opposed to the first action, and in increased measure.
  • To act mutually or reciprocally upon each other, as two or more chemical agents.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. show a response or a reaction to something
  • v. undergo a chemical reaction; react with another substance under certain conditions
  • v. act against or in opposition to

Etymologies

Sorry, no etymologies found.

Examples

Comments

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  • (verb): to act in response to something

    April 6, 2010