interaction

noun

in·​ter·​ac·​tion ˌin-tər-ˈak-shən 

: mutual or reciprocal action or influence

interactional

ˌin-tər-ˈak-sh(ə-)nəl 

adjective

Synonyms

• commerce
• dealings
• intercourse
• relation

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

Wednesday’s vote will demonstrate the benefits of this groundbreaking model for community interaction, a powerful tool for nurturing ongoing environmental stewardship and advocacy. —Letters To The Editor, The Mercury News, 15 Nov. 2024

After Dentist joke, but a small, normal interaction with the guests while sailing is his only contribution to the episode. —Emma Soren, Vulture, 12 Nov. 2024

The benefit of putting your words into action is clear: take an inventory of your company values and intentionally weave those into your everyday interactions with society. 3. —Serenity Gibbons, Forbes, 5 Nov. 2024

The interaction was different from any other play session with a dog. —Thomas G. Moukawsher, Newsweek, 5 Nov. 2024

Word History

First Known Use

1832, in the meaning defined above

Kids Definition

interaction

noun

in·​ter·​ac·​tion ˌint-ə-ˈrak-shən 

: the action or influence of people, groups, or things on one another

interactional

-shnəl 

-shən-ᵊl

adjective

Medical Definition

interaction

noun

in·​ter·​ac·​tion ˌint-ə-ˈrak-shən 

: mutual or reciprocal action or influence

interaction of the heart and lungs

interactional

-shnəl, -shən-ᵊl 

adjective