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 of interaction

• relation
• intercourse
• dealings

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

Psychologists provided subjects with greater or fewer resources in a laboratory setting and measured their views, observed their interactions in groups, and watched their behaviors. —Caleb Pomeroy, Foreign Affairs, 24 Dec. 2025

Walmart is also trialing digital shelf talkers in some stores, a proprietary technology developed by the retailer to drive excitement and interaction in the aisle by sharing content, marketing assets and product information. —Jenny B. Fine, Footwear News, 23 Dec. 2025

The call caught the rest of the interaction. —Charlotte Observer, 23 Dec. 2025

What happened next left Patel and Miller with a different understanding of the interaction. —Alisha Ebrahimji, CNN Money, 23 Dec. 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