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Showing results for methylene. Search instead for methylhexane.

methylene

American  
[meth-uh-leen] / ˈmɛθ əˌlin /

adjective

Chemistry.
  1. containing the methylene group.


methylene British  
/ ˈmɛθɪˌliːn /

noun

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

    a methylene group or radical

"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

methylene Scientific  
/ mĕthə-lēn′ /
  1. A bivalent hydrocarbon radical, CH 2. 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.


Etymology

Origin of methylene

< French méthylène (coined in 1834), equivalent to Greek méth ( y ) wine ( see mead 1) + 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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

However, the amount of residual methylene chloride found in roasted coffee beans is very small – about 2 to 3 milligrams per kilogram.

From Salon Jul. 23, 2024

During the steaming and roasting process, the beans get hot enough that residual methylene chloride evaporates.

From Salon Jul. 23, 2024

The chemical industry has argued that the EPA is overstating the risks of methylene chloride and that adequate protections have mitigated health risks.

From Seattle Times Apr. 30, 2024

The EPA’s final risk management rule requires companies to rapidly phase down manufacturing, processing and distribution of methylene chloride for all consumer uses and most industrial and commercial uses, including in home renovations.

From Seattle Times Apr. 30, 2024

Luerssen and Kühn70 came to the conclusion that yoghourt contained chiefly a mixture of Bacillus bulgaricus, diplostreptococci, and a "granule" bacillus, so called on account of its granulated appearance after treatment with methylene blue.

From The Bacillus of Long Life a manual of the preparation and souring of milk for dietary purposes, together with and historical account of the use of fermente by Loudon Douglas

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