【化】 克酮酸
【医】 克酮酸, 邻二羟环戊烯二酮

Croconic \Cro*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.