methylene

[ meth-uh-leen ]

/ ˈmɛθ əˌlin /

adjective Chemistry.

containing the methylene group.

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

Words nearby methylene

methyl chloride, methyl chloroform, methyl chloroformate, methylcyclohexanol, methyldopa, methylene, methylene azure, methylene blue, methylene chloride, methylene dioxyamphetamine, methylene group

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for methylene

There is no reduction if the milk, methylene blue, and aldehyde are agitated with air.
The Nature of Animal Light|E. Newton Harvey
Methylene blue can be reduced by the H2 and the hypophosphite oxidized.
The Nature of Animal Light|E. Newton Harvey
Chloride of methylene is a colourless mobile fluid, having a smell like chloroform, and a burning taste.
Cooley's Practical Receipts, Volume II|Arnold Cooley
Frog's larvæ were allowed to remain in a solution of neutral red, to which a trace of methylene blue had been added.
Histology of the Blood|Paul Ehrlich

To this purpose a cold bath is prepared with only so much methyl violet or methylene blue, as to give the water a very faint tint.
The Practical Ostrich Feather Dyer|Alexander Paul

British Dictionary definitions for methylene

methylene

/ (ˈmɛθɪˌliːn) /

noun

(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

Medical definitions for methylene

methylene

[ mĕth′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.

Scientific definitions for methylene

methylene

[ mĕth′ə-lēn′ ]

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.

单词	methylene
释义	methylene [ meth-uh-leen ] / ˈmɛθ əˌlin / adjective Chemistry. containing the methylene group. 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 Words nearby methylene methyl chloride, methyl chloroform, methyl chloroformate, methylcyclohexanol, methyldopa, methylene, methylene azure, methylene blue, methylene chloride, methylene dioxyamphetamine, methylene group Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for methylene There is no reduction if the milk, methylene blue, and aldehyde are agitated with air. The Nature of Animal Light\|E. Newton Harvey Methylene blue can be reduced by the H2 and the hypophosphite oxidized. The Nature of Animal Light\|E. Newton Harvey Chloride of methylene is a colourless mobile fluid, having a smell like chloroform, and a burning taste. Cooley's Practical Receipts, Volume II\|Arnold Cooley Frog's larvæ were allowed to remain in a solution of neutral red, to which a trace of methylene blue had been added. Histology of the Blood\|Paul Ehrlich To this purpose a cold bath is prepared with only so much methyl violet or methylene blue, as to give the water a very faint tint. The Practical Ostrich Feather Dyer\|Alexander Paul British Dictionary definitions for methylene methylene / (ˈmɛθɪˌliːn) / noun (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 Medical definitions for methylene methylene [ mĕth′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. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for methylene methylene [ mĕth′ə-lēn′ ] 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.
随便看	sacajawea sac-a-lait sacaton sacc saccade saccadic saccate sacchar- saccharase saccharate saccharic saccharic acid saccharide sacchariferous saccharify saccharimeter saccharimetry saccharin saccharine saccharize saccharo- saccharofarinaceous saccharoid saccharolactic acid saccharolytic