The situation or occurrence in which two or more objects or events act upon one another to produce a new effect; the effect resulting from such a situation or occurrence.

plural of interaction

Of, pertaining to, or featuring interaction.

In an interactive manner.

The quality of being interactive.

(dated) A short act or piece between others, as in a play; a break between acts. / (obsolete) Intermediate employment or time. / (social sciences) A pair or series of acts involving more than one person.

(of people) To engage in communication and other shared activities (with someone). / (of two or more things) To affect each other.

Taking part in an interaction.

present participle of interact

Interacting with or communicating with and reacting to each other; influencing or having an effect on each other; acting or capable of acting on each other or with the other.