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

The fund is designed to acquire and operate a portfolio of businesses, which may not make much sense for a culture built around ownership, autonomy, and strategies derived from direct audience interaction. — Dana Harris-Bridson, IndieWire, 22 July 2026

Addressing The Last-Mile Problem The first wave of enterprise AI systems focused on adding LLMs to customer interaction layers; voice AI platforms, chatbots, RCS systems, copilots and workflow agents are a few examples. — Naresh Prajapati, Forbes.com, 22 July 2026

Apart from the abundant trade of silk and spices, the Silk Road facilitated the transfer of technologies and philosophies and the interaction of Indian and Chinese peoples. — Encyclopedia Britannica, 22 July 2026

Gibbard spent two decades in solitude working for the Forest Service and now finds human interaction overwhelming. — Peter White, Deadline, 22 July 2026

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