To bring separate parts together to form a single unit or group. It often describes making people or ideas act as one.
From Late Latin 'ūnificāre' meaning 'to make one', from 'ūnus' (one) + '-ficāre' (to make). It came into English in the 1500s.
Unify is the action behind words like union, unity, and United. Any time you see 'uni-', think of things being pulled into one whole.
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