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
tolidine in American English
(ˈtɑləˌdin; ˈtɑlədɪn)
noun
any of a group of isomeric dimethyl derivatives of benzidine, C14H16N2, used in the manufacture of dyes and in the detection of gold and chlorine