Other forms: interacting, interacts, interacted
To interact is to act on each other — talking, playing, or reacting. Interact with others, they interacted well, interact with the site.
The mutuality is the whole word: both sides do something, which is why a page you can click is called interactive and a film you watch is not. In medicine, drugs that interact change each other's effect, and checking for that is a routine part of prescribing. Note interaction; and that inter- means between.
1verbinteractTo act on each other.
“Children learn language by interacting with the adults around them.”
interact is a mutual acting.
Proto-Indo-European
*ters-
Vulgar Latin
*interrāre — to put in earth
Old French
enterrer
Middle English
enteren
English
inter
English, today
interact
From inter- + act. inter comes from Middle English enteren, borrowed from Old French enterrer, enterer, from Vulgar Latin interrāre (“to put in earth”).
Etymology from Wiktionary, CC BY-SA