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methyl

[meth-uh l]
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adjective Chemistry.
  1. containing the methyl group.

Origin of methyl

First recorded in 1835–45; by back formation from methylene
Related formsme·thyl·ic [me-thil-ik, muh-] /mɛˈθɪl ɪk, mə-/, adjective

methyl-

  1. a combining form occurring in the names of chemical compounds in which the methyl group is present: methylamine.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for methyl

methyl

noun
  1. (modifier) of, consisting of, or containing the monovalent group of atoms CH 3
  2. an organometallic compound in which methyl groups are bound directly to a metal atom
Derived Formsmethylic (məˈθɪlɪk), adjective

Word Origin

C19: from French méthyle, back formation from methylene
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

Word Origin and History for methyl

n.

univalent hydrocarbon radical, 1840, from German methyl (1840) or directly from French méthyle, back-formation from French méthylène (see methylene).

Online Etymology Dictionary, © 2010 Douglas Harper

methyl in Medicine

methyl

(mĕthəl)
n.
  1. The alkyl group, often a univalent radical, CH3, derived from methane and occurring in many important organic compounds.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

methyl in Science

methyl

[mĕthəl]
  1. The radical CH3, derived from methane.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.