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methylene

[meth-uh-leen]

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adjective Chemistry.

containing the methylene group.

Origin:
< 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

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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Methylene is always a great word to know.

So is inorganic. Does it mean:

the quantity of product formed by the interaction of two or more substances, generally expressed as a percentage

pertaining to compounds that are not hydrocarbons or their derivatives

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Collins

World English Dictionary

methylene (ˈmɛθɪˌliːn)

—n
	(modifier) of, consisting of, or containing the divalent group of atoms =CH₂: a 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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage

Medical Dictionary

methylene meth·yl·ene (měth'ə-lēn')
n.
A bivalent hydrocarbon radical, CH₂, that is a component of unsaturated hydrocarbons and is derived from methane by the removal of two hydrogen atoms.

American Heritage

Science Dictionary

methylene

(měth'ə-lēn') Pronunciation Key
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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