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

The ability to share nonverbal information is crucial in social interaction. —Expert Panel®, Forbes, 5 Nov. 2024

The cast of the upcoming adaption has been in Sydney to promote the new film and people online have been praising Slater after his sweet interaction with a fan, with videos posted on X (formerly ) going viral. —Billie Schwab Dunn, Newsweek, 5 Nov. 2024

However, these are remote and experts say may not be a good substitute for actual human interaction. —Sarah Prazmark, ABC News, 5 Nov. 2024

James isn't the only person in Jenn's life who has commented on their flirty interactions. —Esther Kang, People.com, 4 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