ninhydrin Syllabification: (nin·hy·drin)Pronunciation: /ninˈhīdrin/Definition of ninhydrin noun Chemistry a synthetic crystalline compound that forms deeply colored products with primary amines and is used in analytical tests for amino acids. A ketone derivative of indene; chemical formula: C9H6O4 Origin: early 20th century: from nin- (of unknown origin) + hydro- + -in1ninhydrin in other Oxford dictionaries Definition of ninhydrin in the British & World English dictionary
