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Methylene

8 dictionary results for: Methylene

Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

meth·yl·ene

[meth-uh-leen] Pronunciation Key

–adjective Chemistry.

containing the methylene group.

[Origin: < F méthylène (coined in 1834), equiv. to Gk méth(y) wine (see mead¹) + hýl(é) wood + F -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 (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

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American Heritage Dictionary - Cite This Source - Share This

meth·yl·ene (měth'ə-lēn') Pronunciation Key
n. A bivalent hydrocarbon radical, CH₂^-, a component of unsaturated hydrocarbons.

[French méthylène : Greek methu, wine; see medhu- in Indo-European roots + Greek hūlē, wood, substance.]

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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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WordNet - Cite This Source - Share This

methylene
noun
the bivalent radical CH2 derived from methane [syn: methylene group]

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The American Heritage Science Dictionary - Cite This Source - Share This

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.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

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.

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Merriam-Webster's Medical Dictionary - Cite This Source - Share This
Main Entry: meth·y·lene
Pronunciation: 'meth-&-"lEn, -l&n
Function: noun
: a bivalent hydrocarbon radical CH₂ derived frommethane by removal of two hydrogen atoms

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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Methylene

Meth"ene\, n. [Methyl + ethylene.] (Chem.) See Methylene.

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