GNU Collaborative International Dictionary of English

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1.       
   Quinic (?), a. [See Quinine, and cf. Kinic.] (Chem.) Pertaining to, derived from, or connected with, quinine and related compounds; specifically, designating a nonnitrogenous acid obtained from cinchona bark, coffee, beans, etc., as a white crystalline substance. [Written also chinic, kinic.]
   
   [1913 Webster]