react /ɹiːˈækt/verb 6noun 1forms 3 verb6 •to show feelings or do something in answer to what has happenedHow did she react to the news? •(Internet) To post a reaction (icon or emoji indicating how one feels about a posted message). •To return an impulse or impression; to resist the action of another body by an opposite forceEvery body reacts on the body that impels it from its natural state. •To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition. •To cause chemical agents to react; to cause one chemical agent to react with another. •(no longer used) To act or perform a second time; to do over again; to reenact. noun1 •(Internet) An emoji used to express a reaction to a post on social media.Sad reacts only formsreacted · reacting · reacts