interaction
nounfeminine/ĩtɨɾɐˈsɐ̃w̃/high
in·te·ra·ção
Definition
Reciprocal action between two or more people, entities, or systems; mutual communication or influence.
Social interaction is important for child development.
The interaction between the chemicals caused an unexpected reaction.
Etymology
Do latim 'interactio, -onis' (ação mútua), derivado de 'interagere' (agir entre).