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methylation

American  
[meth-uh-ley-shuhn] / ˌmɛθ əˈleɪ ʃən /

noun

Chemistry.

  1. the process of replacing a hydrogen atom with a methyl group.

Etymology

Origin of methylation

First recorded in 1875–80; methylate + -ion

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.

GlcHMS326 is notable for undergoing three distinct chemical modifications: glycosylation, hydroxylation, and methylation.

From Science Daily

Methylation is known to improve the stability, UV absorption, and antioxidant activity of MAA compounds.

From Science Daily

The second step is methylation, which attaches a methyl group to the sugar.

From Science Daily

The results confirm that DNA methylation directly controls gene activity.

From Science Daily

This measure is based on DNA methylation, a collection of tiny chemical tags on DNA that shift as we grow older.

From Science Daily

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.