interaction

noun

in·​ter·​ac·​tion ˌin-tər-ˈak-shən How to pronounce interaction (audio)
Synonyms of interaction
: 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.
Riccobono said a few basic tips can help make those interactions as smooth as possible. Zach Wichter, USA Today, 22 June 2026 The federal investigation relates to Carvalho’s interaction with one or more contractors. Howard Blume, Los Angeles Times, 22 June 2026 One example of a surprising fashion show led to interaction with guests presenting the spring 2024 collection in Milan, when staff members handed envelopes to attendees seated in the two grandstands facing a minimal black set. Luisa Zargani, Footwear News, 21 June 2026 The Chicago rapper took the stage before a crowd that stretched throughout the venue, delivering a set that mixed fan favorites with freestyle moments and audience interaction. J.m. Banks june 21, Kansas City Star, 21 June 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 24 Jun. 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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