Definition of nigrosine

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ni·gro·sine  audio  (ngr-sn, -sn) KEY 

NOUN:
Any of a class of dyes, varying from blue to black, used in the manufacture of inks and for dyeing wood and textiles.
ETYMOLOGY:
Latin niger, nigr-, black; see nekw-t- in Indo-European roots + -os(e)2 + -ine2


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