interaction

noun

in·​ter·​ac·​tion ˌin-tər-ˈak-shən How to pronounce interaction (audio)
: 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.
Her interactions with Nam, the audience, and even her reaction to seeing actor Lee Byung-hun in the audience were so authentic and endearing. Laura Sirikul, Forbes.com, 3 Aug. 2025 Octopuses are highly intelligent and curious creatures, and their interactions with humans are often playful and exploratory. Alex Nitzberg, FOXNews.com, 3 Aug. 2025 Christopher Mercado, who retired as a lieutenant from the New York Police Department, agreed with McNeil’s legal team’s suggestion that drivers should record their police interactions and that a camera mounted inside a driver’s car could offer a unique point of view. Jeff Martin, The Orlando Sentinel, 3 Aug. 2025 Kevin Kempf, who served as director of the IDOC in 2016, told CNN affiliate KBOI at the time that inmates were confined alone for up to 23 hours a day with little human interaction, received meals in their cells, and were allowed showers only three times a week. Karina Tsui, CNN Money, 2 Aug. 2025 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 6 Aug. 2025.

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

More from Merriam-Webster on interaction

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