a suffix used in the names of radicals: ethyl.
Origin of -yl
< French -yle < Greek hȳ́lē matter, wood, substance
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British Dictionary definitions for -yl
(in chemistry) indicating a group or radicalmethyl; carbonyl
Word Origin for -yl
from Greek hulē wood, matter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for -yl
A monovalent organic acid radical:carbonyl.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for -yl
A suffix used to form the chemical names of organic compounds when they are radicals (parts of larger compounds), such as ethyl and phenyl.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.