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

INTERACTION definition: 1. an occasion when two or more people or things communicate with or react to each other: 2. an…. Learn more.

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

Interaction definition: reciprocal action, effect, or influence.. See examples of INTERACTION used in a sentence.

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 …

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

Jun 23, 2025 · Established in 1984, InterAction is the leading alliance of NGOs and partners in the United States. With a focus on serving the world’s impoverished and vulnerable populations, …

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.

Oct 9, 2025 · interaction (countable and uncountable, plural interactions) Be aware of interactions between different medications. Such technologies will also “shape future human interaction …

A conversation or exchange between people. I enjoyed the interaction with a bunch of like-minded people.