toluidine

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to·lu·i·dine

 (tə-lo͞o′ĭ-dēn′)
n.
Any of three isomeric compounds, C7H9N, used to make dyes.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

toluidine

(tɒˈljuːɪˌdiːn) or

toluidin

n
(Elements & Compounds) an amine derived from toluene existing in three isomeric forms; aminotoluene. The ortho- and meta- isomers are liquids and the para- isomer is a crystalline solid. All three are used in making dyes. Formula: C6H4CH3NH2
[C19: from tolu(ene) + -ide + -ine2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

to•lu•i•dine

(təˈlu ɪˌdin, -dɪn)

n.
any of three isomeric amines having the formula C7H9N, derived from toluene: used in the manufacture of dyes and drugs.
[1840–50; tolu (ene) + -idine]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.