interaction

noun

in·​ter·​ac·​tion ˌin-tər-ˈak-shən How to pronounce interaction (audio)
Synonyms of interactionnext
: mutual or reciprocal action or influence
interactional adjective

Examples of interaction in a Sentence

she guessed from the friendly interaction that they were close to the other parents in the organization
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The combination of audience interaction and tonal agility means each performance has its own emotional arc, shaped partly by the people in the room that night. Hanna Wickes, Charlotte Observer, 13 Mar. 2026 Myka leaves this interaction believing Missé over Dara and saying she’s done with their friendship. Brian Moylan, Vulture, 13 Mar. 2026 After that interaction, Kandie Zaidieh, who has lived on the block for 30 years, poked her head out of the door. Andrea May Sahouri, Freep.com, 13 Mar. 2026 However, there are some side effects and interactions to know. Kirstyn Hill, Health, 13 Mar. 2026 See All Example Sentences for interaction

Word History

First Known Use

1832, in the meaning defined above

Time Traveler
The first known use of interaction was in 1832

Browse Nearby Words

Cite this Entry

“Interaction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interaction. Accessed 14 Mar. 2026.

Kids Definition

interaction

noun
in·​ter·​ac·​tion ˌint-ə-ˈrak-shən How to pronounce interaction (audio)
: the action or influence of people, groups, or things on one another
interactional
-shnəl How to pronounce interaction (audio)
-shən-ᵊl
adjective

Medical Definition

interaction

noun
in·​ter·​ac·​tion ˌint-ə-ˈrak-shən How to pronounce interaction (audio)
: mutual or reciprocal action or influence
interaction of the heart and lungs
interactional adjective

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