a. [f. L. cooptāt- ppl. stem (see COOPT) + -IVE.] Of, pertaining to, or chosen by cooptation.

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1874.  Scheme of Wilton Grammar School. The governing body shall consist of twelve persons, of whom five shall be representative Governors, and seven shall be co-optative Governors.

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1884.  Manch. Exam., 10 May, 5/6. The governing body … consists of 12 representative governors and 12 co-optative governors.

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