- a white or yellow, toxic, crystalline or powdery compound, C9H4O3⋅H2O, that reddens when heated above 100°C, a monohydrate, soluble in water or alcohol: used primarily as a reagent to detect the presence of various amino acids.
Origin of ninhydrin
From German, registered as a trademark for the drug in 1912
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a chemical reagent used for the detection and analysis of primary amines, esp amino acids, with which it forms a derivative with an intense purple colour
C20: from the chemical name triketo hydrindene
- A poisonous crystalline oxidizing agent used as an analytic reagent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.