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-yl

Chemistry.

a suffix used in the names of radicals: ethyl.

Origin:
< F -yle < Gk hȳ́lē matter, wood, substance

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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-yl
suff. An organic acid radical: carbonyl.

[French -yle, from Greek hūlē, wood, matter.]

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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-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 © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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-yl suff.
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.
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-yl

-yl\ [Gr. ? wood, material.] (Chem.) A suffix used as a characteristic termination of chemical radicals; as in ethyl, carbonyl, hydroxyl, etc.

Note: -yl was first used in 1832 by Liebig and W["o]hler in naming benzoyl, in the sense of stuff, or fundamental material, then in 1834 by Dumas and Peligot in naming methyl, in the sense of wood. After this -yl was generally used as in benzoyl, in the sense of stuff, characteristic ground, fundamental material.

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