CroconicCro*con"ic\ (kr?-k?n"?k), a. [Gr. ???? saffron.]1. Of, pertaining to, or resembling saffron; having the color of saffron; as, croconic acid. 2. Pertaining to, or derived from, croconic acid. Croconic acid (Chem.), a yellow crystalline substance, C5O3(OH)2, obtained from potassium carboxide, rhodizonic acid, and various phenol and quinone derivatives of benzene, and forming yellow or orange colored salts.