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.
Consult with your healthcare provider to ensure adequate zinc intake and to effectively manage any potential interactions. Melissa Nieves, Verywell Health, 4 June 2025 While maintaining a standardized approach ensures efficiency, tailoring interactions to meet the unique needs of each market fosters stronger connections. Shirin Ali, Forbes.com, 4 June 2025 Identifying the drinking fountains that had telltale cockatoo-use marks – beak bites in the plastic around the outlet – Klump and a team of scientists from Western Sydney University, The Australian National University and the University of Vienna set up cameras to monitor the birds' interactions. New Atlas, 4 June 2025 Mom, with light-brown hair long enough to cover that name plate, smiles during these interactions, which are starting to happen a lot recently. Sam McDowell, Kansas City Star, 4 June 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 7 Jun. 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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