GNU Collaborative International Dictionary of English

Found one definition

1.       
   ‖Classis (?), n.; pl. Classes (#). [L. See Class, n.]
   1. A class or order; sort; kind. [Obs.]
   
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   His opinion of that classis of men. Clarendon.
   
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   2. (Eccl.) An ecclesiastical body or judicatory in certain churches, as the Reformed Dutch. It is intermediate between the consistory and the synod, and corresponds to the presbytery in the Presbyterian church.
   
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