- containing the methylene group.
Origin of methylene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for methylene
Ehrlich has used a double stain with neutral red and methylene blue.Histology of the Blood
Bichloride of Methylene has been used for ansthetic purposes.Memoranda on Poisons
Thomas Hawkes Tanner
In 48 hours bacteria appear and methylene blue is also reduced.
Methylene blue can be reduced by the H2 and the hypophosphite oxidized.
As methylene blue contains no oxygen, its reduction consists in the addition of two atoms of hydrogen.
- (modifier) of, consisting of, or containing the divalent group of atoms =CH 2a methylene group or radical
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
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
- 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.
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