in·​ter·​ac·​tion | \ ˌin-tər-ˈak-shən How to pronounce interaction (audio) \

Definition of interaction

: mutual or reciprocal action or influence

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Other Words from interaction

interactional \ ˌin-​tər-​ˈak-​shnəl How to pronounce interaction (audio) , -​shə-​nᵊl \ adjective

Synonyms & Antonyms for interaction



  • nonintercourse
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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 Like many, the 51-year-old craved more human interaction than video calls could provide. USA TODAY, 19 Oct. 2021 As China’s e-commerce industry has matured, consumers have started to embrace new ways of shopping that favor browsing and interaction over targeted product searches. Stephanie Yang, WSJ, 17 Oct. 2021 Earlier this year, for example, JetBlue introduced a platform that offers crewmembers suggested responses and actions, and insight into customer sentiment in order to ensure every interaction moves forward. James Freeze, Forbes, 14 Oct. 2021 To date this interaction, by the way, Belushi died of a heroin overdose in 1982 at LA’s Chateau Marmont. Andy Meek, BGR, 13 Oct. 2021 But something about that interaction stuck with Kharbanda. London Gibson, The Indianapolis Star, 13 Oct. 2021 In addition to disappearance and death, the case has sparked conversations around domestic violence due to the release of body camera footage of an interaction between Petito, Laundrie and the police over one of the couple's fights. Madeline Holcombe, CNN, 13 Oct. 2021 For starters, that interaction on social media can turn followers into customers. Los Angeles Times, 12 Oct. 2021 Eric was one of a long line of people in Baltimore County that ended up dead after interaction with Baltimore County police. Washington Post, 12 Oct. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'interaction.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of interaction

1832, in the meaning defined above

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Time Traveler for interaction

Time Traveler

The first known use of interaction was in 1832

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Dictionary Entries Near interaction




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Statistics for interaction

Last Updated

21 Oct 2021

Cite this Entry

“Interaction.” Dictionary, Merriam-Webster, Accessed 24 Oct. 2021.

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More Definitions for interaction


in·​ter·​ac·​tion | \ ˌin-tər-ˈak-shən How to pronounce interaction (audio) \

Kids Definition of interaction

1 : the act of talking or doing things with other people Board games encourage interaction.
2 : the action or influence of things on one another interaction of the heart and lungs


in·​ter·​ac·​tion | \ ˌint-ə-ˈrak-shən How to pronounce interaction (audio) \

Medical Definition of interaction

: mutual or reciprocal action or influence interaction of the heart and lungs

Other Words from interaction

interactional \ -​shnəl, -​shən-​ᵊl How to pronounce interaction (audio) \ adjective

More from Merriam-Webster on interaction

Nglish: Translation of interaction for Spanish Speakers

Britannica English: Translation of interaction for Arabic Speakers


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