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

Both the text and interaction (or lack there of) amused Kelce and his fellow analysts. —Skyler Caruso, PEOPLE, 11 Nov. 2025

Formally known as the aurora borealis, the colorful night skies are caused by the interaction between Earth’s magnetic field and the sun’s plasma, according to the National Weather Service. —Natalie Neysa Alund, USA Today, 11 Nov. 2025

The agent utilizes natural language interactions across TIME's entire digital content corpus to drive reader engagement. —Time Staff, Time, 10 Nov. 2025

Benan will be responsible for overseeing the daily operations of the business, including business affairs, interaction with producers, and distribution licensing. —Zac Ntim, Deadline, 10 Nov. 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