Definition of "ninhydrin" [ninhydrin]

• The aromatic compound 2,2-dihydroxyindane-1,3-dione which is used as a reagent to detect amines (noun)

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• "But in doing so, he runs the risk of ruining any possibility of fuming prints with superglue or looking for them with an alternate light source and luminescent powders or processing them with chemicals such as ninhydrin or diazafluoren."
• "If you used the small-particle reagent first, like they did in the episode, it would ruin the porous surface for the ninhydrin procedure."
• "A ninhydrin analysis revealed a total of nearly two hundred latent fingerprints on the three pages on which the marked paragraphs appeared and another eighty on the jacket."