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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.

See Examples For:

In one example, two mice lacking methylation on a specific allele produced offspring in which both copies of that allele carried methylation.

From Science Daily Jun. 1, 2026

"It's almost like the methylation is transferred to another allele," says Feinberg.

From Science Daily Jun. 1, 2026

More recent research has explored how age-related changes in hypothalamic DNA methylation and hormone signaling could contribute to neurodegenerative diseases such as Alzheimer's.

From Science Daily May 24, 2026

Investigators examined DNA methylation data from blood samples collected from 958 healthy participants whose average chronological age was 70.

From Science Daily May 14, 2026

The methylation of aniline can obviously be carried out by the foregoing process only when beet-sugar residues are available.

From Coal and What We Get from It by Meldola, Raphael

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