Cou*mar"ic (k??-m?r"?k), a.
Relating to, derived from, or like, the Dipterix odorata, a tree of Guiana.
Coumaric acid Chem., one of a series of aromatic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C6H4.C2H2.CO2H, obtained from the tonka bean, sweet clover, etc., and also produced artifically.
© Webster 1913.