Also found in: Medical, Wikipedia.
Related to tolyl: Xylyl, Mesityl, Tosyl


The group C7H7, derived from toluene. Also called cresyl.

[tol(u) + -yl.]
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.


1. (Elements & Compounds) (modifier) of, consisting of, or containing any of three isomeric groups, CH3C6H4-, derived from toluene: tolyl group or radical.
2. (Elements & Compounds) (modifier) Also: α-tolyl another word for benzyl
[C19: from tolu (see toluene) + -yl]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈtɒl ɪl)

any of three univalent groups, C7H7, derived from toluene.
[1865–70; tol (uene) + -yl]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Kokten, "Highly sensitive electrochemical determination of acetaminophen in pharmaceuticals by poly[2, 5-di(2-thiophenyl)-1-p-(tolyl)pyrrole] modified pencil graphite electrode," IEEE Sensors Journal, vol.
In contrast, the nitroolefin bearing phenyl, tolyl, and 4-chlorophenyl, afforded the corresponding Michael products in excellent yield (97%) (Table 2, entries 1, 2 and 4), while in the case of nitroolefin with 4-methoxyphenyl, the yield was slightly lower (84%) (Table 2, entry 3), which was probably attributed to the steric effect of the 4-methoxyphenyl group.
The IR spectra show the characteristic sharp band for v(C-O-C) and broad band for v(C=C) (tolyl and benzyl ring stretching) in the ranges 1043-1015 and 1607-1581 [cm.sup.-1], respectively.
(51.) Lin, CH, Lin, HT, Chang, SL, Hwang, HJ, Hu, YM, Taso, YR, Su, WC, "Benzoxazines with Tolyl, [rho]-hydroxyphenyl or [rho]-carboxyphenyl linkage and the Structure-Property Relationship of Resulting Thermosets." Polymer, 50 2264-2272 (2009)