methylene

[meth-uh-leen]

Origin of methylene

< French méthylène (coined in 1834), equivalent to Greek méth(y) wine (see mead1) + hýl(ē) wood + French -ène -ene, taken to mean “wood-spirits” (vin ou liqueur spiritueuse du bois), though elements of the compound are in the wrong order to give this sense
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for methylene

Historical Examples of methylene


British Dictionary definitions for methylene

methylene

noun
  1. (modifier) of, consisting of, or containing the divalent group of atoms =CH 2a methylene group or radical

Word Origin for methylene

C19: from French méthylène, from Greek methu wine + hulē wood + -ene : originally referring to a substance distilled from wood
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 methylene
n.

1835, from French méthylène (1834), coined by Jean-Baptiste-André Dumas (1800-1884) and Eugène-Melchior Péligot (1811-1890) from Greek methy "wine" (see mead (n.1)) + -yl "stuff" + chemical suffix -ene. So called because detected in wood alcohol.

Online Etymology Dictionary, © 2010 Douglas Harper

methylene in Medicine

methylene

[mĕthə-lēn′]
n.
  1. A bivalent hydrocarbon radical, CH2, that is a component of unsaturated hydrocarbons and is derived from methane by the removal of two hydrogen atoms.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

methylene in Science

methylene

[mĕthə-lēn′]
  1. A bivalent hydrocarbon radical, CH2. Because it has two unshared electrons, it is extremely reactive and occurs only as an intermediate byproduct in chemical reactions. Methylene is a component of unsaturated hydrocarbons.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.