The meaning of INTERACTION is mutual or reciprocal action or influence. How to use interaction in a sentence.

Communicating & keeping in touch (Definition of interaction from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

(of two or more people, things etc) to act, or have some effect, on each other.

Definition of interaction noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

One possible drug interaction can involve the drugs working together to have a stronger effect. An interaction between medications occurs when the effectiveness of one medication is altered by …

in•ter•ac•tion, n. [uncountable] social interaction between men and women. [countable] day-to-day interactions. in•ter•ac•tive, adj.: Interactive video lets the user decide what to see on the screen.

• Learning is through interaction with the environment rather than being preprogrammed. • The third dialectic involves the subject recognizing itself through interaction with other subjects. • She …