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An organic acid radical: carbonyl.
[French -yle, from Greek hūlē, wood, matter.]
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.
(Chemistry) (in chemistry) indicating a group or radical: methyl; carbonyl.
[from Greek hulē wood, matter]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a suffix used in the names of chemical groups: ethyl.
[< French -yle < Greek hylē matter, wood, substance]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.