Dictionary.com
Thesaurus.com

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.

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

“Exposure to methylene chloride has devastated families across this country for too long, including some who saw loved ones go to work and never come home,” EPA Administrator Michael Regan said in a statement.

From Seattle Times • Apr. 30, 2024

Wendy Hartley, whose son Kevin died from methylene chloride poisoning after refinishing a bathtub at work, called the new rule “a huge step that will protect vulnerable workers.”

From Seattle Times • Apr. 30, 2024

Shortly thereafter, California Assemblymember Eloise Reyes proposed new legislation that would expressly prohibit a “person or entity from using methylene chloride in the process of decaffeinating coffee” starting in 2027.

From Salon • Mar. 16, 2024

Bacillus from Yoghourt, cultivated after the usual Agar method, for twenty-four hours at 37° C. Stain: aqueous 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 Douglas, Loudon

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "methylene" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com