[ meth-uh-leyt ]
/ ˈmɛθ əˌleɪt /


Also called methoxide. any derivative of methyl alcohol, as sodium methylate, CH3ONa.
any compound containing the methyl group.

verb (used with object), meth·yl·at·ed, meth·yl·at·ing.

(in a compound) to replace (one or more hydrogen atoms) with the methyl group.
to mix with methyl alcohol, as in the denaturation of ethyl alcohol.

Nearby words

  1. methyl violet,
  2. methyl-,
  3. methylacetic acid,
  4. methylal,
  5. methylamine,
  6. methylated spirits,
  7. methylation,
  8. methylbenzene,
  9. methylbenzyl acetate,
  10. methylcatechol

Origin of methylate

First recorded in 1825–35; methyl- + -ate1

Related formsmeth·yl·a·tor, nounun·meth·yl·at·ed, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for unmethylated


/ (ˈmɛθɪˌleɪt) /


(tr) to mix with methanol
to undergo or cause to undergo a chemical reaction in which a methyl group is introduced into a molecule


another name for methoxide
Derived Formsmethylation, nounmethylator, noun

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

Medicine definitions for unmethylated


[ mĕthə-lāt′ ]


To mix or combine with methyl alcohol.
To combine with the methyl radical.


An organic compound in which the hydrogen of the hydroxyl group of methyl alcohol is replaced by a metal.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for unmethylated


[ mĕthə-lāt′ ]


An organic compound having the general formula CH3OR, in which R is a metal. Methylates are formed by replacing the hydrogen of the hydroxyl group (OH) of methyl alcohol with a metal.


To combine with the methyl radical.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.