Reaction Definition

rē-ăkshən
reactions
noun
reactions
A return or opposing action, force, influence, etc.
Webster's New World
A response, as to a stimulus or influence.
Webster's New World
A movement back to a former or less advanced condition, stage, etc.; esp., such a movement or tendency in economics or politics; extreme conservatism.
Webster's New World
The state resulting from such changes.
Webster's New World
A tendency to revert to a former state.
American Heritage
Antonyms:
questioncause
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other
A response to a stimulus, such as a reflex.
American Heritage Science

Other Word Forms of Reaction

Noun

Singular:
reaction
Plural:
reactions

Origin of Reaction

  • Old French reaction, from Latin reactio, from the verb reago, from re- (“again") + ago (“to act"). More at English re-, action.

    From Wiktionary

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