nigrosine Hear it!

nigrosine definition

ni·gro·sine (nigrə sēn′, -sin)

noun

any of a group of blue-black or black dyes used as pigments in inks, dyes, shoe polish, etc.

Etymology: < L niger, black + -os(e) + -ine

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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