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  1. INTERACTION Definition & Meaning - Merriam-Webster

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

  2. interaction noun - Definition, pictures, pronunciation and ...

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

  3. INTERACTION | definition in the Cambridge English Dictionary

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

  4. Interaction - definition of interaction by The Free Dictionary

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

  5. INTERACTION definition and meaning | Collins English Dictionary

    Interaction, or an interaction, of substances occurs when the substances affect each other's behavior or action. One possible drug interaction can involve the drugs working together to …

  6. interaction - WordReference.com Dictionary of English

    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.

  7. interaction - Wiktionary, the free dictionary

    Dec 14, 2025 · interaction (countable and uncountable, plural interactions) Be aware of interactions between different medications. Such technologies will also “shape future human …