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Meaning of tolyl group

tol'yl group"

Pronunciation: [key]
— Chem. Chem.
  1. any of three univalent, isomeric groups having the formula CH–, derived from toluene. Also called tol&prim;yl rad&sec;ical.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.