tolidine

tol·i·dine

[tol-i-deen, -din]
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:
1895–1900; tol(uene) + -id3 + -ine2

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tolidine (ˈtɒlɪˌdiːn) [Click for IPA pronunciation guide]
 
n
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
 
[C19: from tol(uene) + -id³ + -ine²]

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00:10
Tolidine is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
the offspring of a zebra and a donkey.
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