Nigrosine

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]