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

Probst also did his part, getting some of his bite back in interactions with the cast. —Dalton Ross, EW.com, 12 Dec. 2024

Positive interactions with parents, friends, and teachers can help even the most reactive child become less agitated over time. —Gail O'Connor, Parents, 12 Dec. 2024

These interactions have become a cornerstone of the show’s growing community. —Tyler Shepherd, USA TODAY, 12 Dec. 2024

Though Mangione is not being held in solitary confinement, his interactions with other prisoners have been limited, TMZ reported. —Joseph Wilkinson, New York Daily News, 11 Dec. 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