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

Boost morale through social interactions and in-person events. —Tomas Chamorro-Premuzic, Forbes, 28 Feb. 2025

Jones, still vigorous at seventy-two, moves through space with ferocious intent while conjuring stories from the past: early dance sensations, tense interactions with the legendary Ailey, and clashes with critics who tried to box him in as a Black artist. —Shauna Lyon, The New Yorker, 28 Feb. 2025

Reagan's interaction with the baby brought Wilemon to tears. —Dan Perry, Newsweek, 28 Feb. 2025

The educational camp is geared to children 6-12 years old and includes hands-on interaction with animals along with arts, crafts and outdoor activities. —Linda McIntosh, San Diego Union-Tribune, 27 Feb. 2025

Word History

First Known Use

1832, in the meaning defined above

Rhymes for interaction

• benefaction
• counteraction
• liquefaction
• putrefaction
• rarefaction
• satisfaction
• stupefaction
• tumefaction
• abstraction
• attraction
• compaction
• contraction

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