in ‧ ter ‧ ac ‧ tion W3 AC /ˌɪntərˈækʃ ə n/ BrE AmE noun [uncountable and countable]
[ Word Family: noun : ↑ act , ↑ action ≠ ↑ inaction , ↑ activity ≠ ↑ inactivity , ↑ reaction , ↑ interaction , ↑ overacting ; adjective : ↑ acting , ↑ active ≠ ↑ inactive ; verb : ↑ act ≠ ↑ overact ; adverb : ↑ actively ]
[ Word Family: noun : ↑ interaction , ↑ interactivity ; verb : ↑ interact ; adverb : ↑ interactively ; adjective : ↑ interactive ]
1 . a process by which two or more things affect each other
interaction of
Price is determined through the interaction of demand and supply.
interaction with/between
the complex interaction between mind and body
2 . the activity of talking to other people, working together with them etc
interaction with/between
the degree of interaction between teacher and student