n.
Pronunciation: ' in-d ə - ˌ kan
Function: noun
Etymology: Latin indicum indigo ― more at INDIGO
Date: 1859
1 : an indigo-forming substance C 8 H 7 NO 4 S found as a salt in urine and other animal fluids also : its potassium salt C 8 H 6 KNO 4 S
2 : a glucoside C 14 H 17 NO 6 occurring especially in the indigo plant and being a source of natural indigo