• (a.) Pertaining to, or designating, a complex organic acid, obtained as a yellowish white gum by the oxidation of croconic acid.
Leu·con'ic (-kŏn'ĭk) adjective [ Leuc- + croc onic .] (Chemistry) Pertaining to, or designating, a complex organic acid, obtained as a yellowish white gum by the oxidation of croconic acid.