Relating to or consisting of a pair or a relationship between two people or things; based on the number two.
From Greek dyas meaning 'pair' or 'the number two,' from duo meaning 'two,' with the suffix -ic meaning 'relating to or characterized by.'
In sociology, 'dyadic' relationships are special because two-person interactions follow completely different rules than group dynamics—a conversation between friends is dyadic, but add one more person and everything changes!
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