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 interactional (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 But as a magician, Seidman heavily relies on audience interaction. Piet Levy, Milwaukee Journal Sentinel, "Ben Seidman, master magician from Milwaukee, can't tour. Doing shows on Zoom, he's busier than ever.," 17 June 2020 Documentary filmmaker Ami Horowitz went to Seattle's Capitol Hill Organized Protest area recently and shared with Fox News footage of his interaction with Jaiden Grayson and other leaders of the movement. Fox News, "Seattle CHOP organizer: 'I'm not here to peacefully protest'," 17 June 2020 An officer showed up, and the interaction was peaceful. oregonlive, "Police accountability, long ignored by Oregon lawmakers, poised to become law as white leaders finally see black colleagues’ urgency," 13 June 2020 Changes in room service and stay-over service to minimize staff-guest interaction. Susan Glaser, cleveland, "Sandusky’s Kalahari Resort, state’s largest hotel and water park, prepares to reopen," 12 June 2020 This chemical interaction happens at the molecular level, and there’s no danger to anyone eating out of glass containers, says Robert Schaut, the scientific director for Corning Pharmaceutical Technologies. Katherine Ellen Foley, Quartz, "The US government is spending millions to prevent a shortage of glass vaccine vials," 12 June 2020 Venues will be cut from 16 to seven and intermissions eliminated to reduce audience interaction. USA TODAY, "'We were founded as a sign of hope': Salzburg Festival will continue on a smaller scale," 10 June 2020 Well before getting to zero, reducing police budgets could mean reducing police violence, or any interaction police have with the public that results in harm. Melissa Gira Grant, The New Republic, "The Rush to Redefine “Defund the Police”," 9 June 2020 Policy changes can help Since the video of the Phoenix police interaction with the Ames-Harper family was released last year, the Phoenix City Council has implemented policy changes and the Police Department has changed some procedures. Jessica Boehm, azcentral, "Phoenix Mayor Kate Gallego promises changes, talks about her son and George Floyd," 7 June 2020

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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Statistics for interaction

Last Updated

22 Jun 2020

Cite this Entry

“Interaction.” Dictionary, Merriam-Webster, Accessed 2 Jul. 2020.

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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 interactional (audio) \ adjective

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