Quinic \Quin"ic\, 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]