Longman Dictionary of Contemporary English homepage

interact

verb
     
in‧ter‧act [intransitive]
1 if people interact with each other, they talk to each other, work together etc
interact with
Lucy interacts well with other children in the class.
2 if one thing interacts with another, or if they interact, they affect each other
interact with
The immune system interacts with both the nervous system and the hormones.

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