What is the meaning of Interact?

To act upon each other.

1. To engage in communication and other shared activities (with someone).

   To engage in communication and other shared activities (with someone).

   To affect each other.

   A short act or piece between others, as in a play; a break between acts.

   Intermediate employment or time.

   A pair or series of acts involving more than one person.

   Source: wiktionary.org