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[tol-i-deen, -din] /ˈtɒl ɪˌdin, -dɪn/
noun, Chemistry
any of several isomeric derivatives of biphenyl containing two methyl and two amino groups, especially the ortho isomer that is used as a reagent and in the preparation of dyes.
Origin of tolidine
1895-1900; tol(uene) + -id3 + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for tolidine
Historical Examples
  • Thus diazotised benzidine and tolidine combine with salicylic acid to form valuable yellow azo-dyes known as “chrysamines.”

    Coal Raphael Meldola
  • It is impossible to attempt to specify by name any of these recent benzidine and tolidine dyes.

    Coal Raphael Meldola
British Dictionary definitions for tolidine


any of several isomeric compounds, esp the ortho- isomer, which is a white or reddish crystalline substance used in the manufacture of dyes and resins. Formula: (C6H3NH2CH3)2
Word Origin
C19: from tol(uene) + -id³ + -ine²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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