Methylation

Pronunciation

• IPA: ËŒmɛθəˈleɪʃən
• Rhymes: -eɪʃən

Origin

methyl + -ation

Full definition of methylation

Noun

1. (chemistry) the addition of a methyl group to a molecule
2. (genetics) the addition of a methyl group to cytosine and adenine residues in DNA that leads to the epigenetic modification of DNA and the reduction of gene expression and protein production

Related terms

• methylate
• ethylation