a. Chem. [f. L. croc-us saffron + -on (meaningless) -IC.] In croconic acid (C5 H2 O5), an inodorous, strongly acid substance, obtained in the form of yellow crystals or powder. Hence Croconate, a salt of this acid.
1838. T. Thomson, Chem. Org. Bodies, 17 (heading), Of croconic acid.
1854. Orr’s Circ. Sc. Chem. 402. The croconate … of potash.
1863–72. Watts, Dict. Chem., II. 110. The croconates, C5M2O5, are yellow (hence the name of the acid).
