ˈində̇ˌkan noun
( -s )
Etymology: Latin indic um indigo + English -an
1. : a colorless crystalline glucoside C 14 H 17 NO 6 occurring especially in indigo plants and in woad and yielding indoxyl and glucose on hydrolysis — see indigo 1a
2. : the sulfuric acid ester C 8 H 6 NOSO 3 H of indoxyl or the crystalline potassium salt of this ester occurring in urine and other animal fluids as a derivative of the indole formed in the alimentary canal and yielding indigo on oxidation