[a. L. cooperātor fellow-worker (Vulgate), agent-n. from cooperārī to CO-OPERATE. So F. coopérateur (16th c.).]

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  1.  One who cooperates with another or others; a fellow-worker.

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a. 1600.  Hooker, Eccl. Pol., VI. vi. § 11. God the author … and man a cooperator by him assigned to work for, with, and under him.

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a. 1677.  Barrow, Serm. (1686), I. xii. 169. They are … Co-operatours with God.

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1789.  Hist., in Ann. Reg., 8. They were styled the adjutants, co-operators, and administrators of the public weal.

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1835.  Arnold, Lett., in Stanley, Life & Corr. (1844), II. viii. 16. The cooperators with whom I may possibly have to work.

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1860.  Maury, Phys. Geog. Sea, xi. § 507. The plan which is followed by Captain Ginn … one of our co-operators.

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  2.  A member of a cooperative society; one who practises industrial cooperation.

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1863.  Q. Rev., CXIV. 438. The opinion is growing among the London co-operators that the system [etc.].

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1884.  Century Mag., XXVIII. 134. The Cooperators, who form the other great branch of the industrial movement in England.

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