interaction

noun

in·​ter·​ac·​tion ˌin-tər-ˈak-shən How to pronounce interaction (audio)
Synonyms of interactionnext
: 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.
The ultimate goal is to have sophisticated agents that work autonomously with very little user interaction. Arjun Kharpal, CNBC, 24 Jan. 2026 According to a list of demands posted at the front doors of the mayor’s office, the activists were demanding clarification of the city’s policies regarding police interaction with immigration authorities. Teri Figueroa, San Diego Union-Tribune, 24 Jan. 2026 In other professions, particularly those involving complex judgment or interpersonal interaction, AI is more often used to strip away routine tasks, leaving workers to focus on higher-value work. Anisha Sircar, Forbes.com, 23 Jan. 2026 Researchers with the University of Miami and the Network Contagion Research Institute (NCRI) found that ChatGPT will magnify particular political views — especially those labeled as authoritarian — after seemingly benign user interactions. Kayla Hayempour, NBC news, 23 Jan. 2026 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 29 Jan. 2026.

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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