azodiphenyl blue
Nigrosine Ni"gro*sine (? or ?), n. [From L. niger black.] (Chem.) A dark blue dyestuff, of the induline group; -- called also {azodiphenyl blue}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • Nigrosine — Ni gro*sine (? or ?), n. [From L. niger black.] (Chem.) A dark blue dyestuff, of the induline group; called also {azodiphenyl blue}. [1913 Webster] …   The Collaborative International Dictionary of English

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