Obs. rare. [f. CO- + ACTIVITY.]

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  1.  Action or activity in concert.

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1659.  H. More, Immort. Soul (1662), 203. This Sympathy and Coactivity. Ibid. (1662), Philos. Writings (1712), Pref. Gen. 14. Matter is … destitute of vital Sympathy and Coactivity.

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  2.  Coactive quality; compulsory character.

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1738.  Warburton, Div. Legat., I. 243. The coactivity of Civil Laws and Religion.

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