mutualreaction

noun
UK /ˈmjuːtʃuəl riˈækʃən/
US /ˈmjuːtʃuəl riˈækʃən/

A mutual reaction is when two people or things both react to each other at the same time.

When the two magnets came close, their mutual reaction made them snap together.


OTHER MEANINGS

2. A response in which two parties affect each other equally.

Their mutual reaction to the surprise was laughter.

3. A chemical change where two substances act on each other.

The mutual reaction of the two liquids produced heat.

4. A shared emotional response between people.

The mutual reaction of the crowd was cheers and applause.