• (a.) Relating to, derived from, or like, the Dipterix odorata, a tree of Guiana.
Cou·mar'ic adjective Relating to, derived from, or like, the Dipterix odorata , a tree of Guiana. Coumaric acid (Chemistry) , one of a series of aromatic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C 6 H 4