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.
On a countrywide scale—from both an epidemiological perspective and a human-rights perspective—closing all nonessential business, closing all schools, prohibiting most social interactions and nonessential travel, and so on, was not considered feasible or wise. David Zweig, The Atlantic, 17 Apr. 2025 In 1987 the criteria widened and encompassed three categories related to social interaction, communication and restrictions in activities. Stephanie Pappas, Scientific American, 17 Apr. 2025 The interaction, the energy level, the dropping it low, the running it back?! Madison E. Goldberg, People.com, 16 Apr. 2025 Invest in customer relationship management (CRM) systems to track interactions. Allbusiness, Forbes.com, 16 Apr. 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 23 Apr. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!