Meaning of “interact” - Learner’s Dictionary

interact

verb [ I ] uk us /ˌɪntərˈækt/
TALK/BEHAVE

B2 to talk and do things with other people:

At school, teachers say he interacted well with other students.
HAVE AN EFFECT

If two things interact, they have an effect on each other:

We are looking at how these chemicals interact.

(Definition of “interact” from the Cambridge Learner’s Dictionary © Cambridge University Press)