react

Meanings

Verb

• To act or perform a second time; to do over again; to reenact.
• To return an impulse or impression; to resist the action of another body by an opposite force
• 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.
• To post a reaction .

Noun

• An emoji used to express a reaction to a post on social media.

Origin

• From re- + act.