Definition of methylate:
(v) :
(organic chemistry) To add a methyl group to a compound
(v) :
(biochemistry) To add a methyl group to a nucleic acid as part of the process of gene expression
(v) :
To add, or treat with methyl alcohol (see methylated spirits)
(n) :
(chemistry) The anion -O-CH₃⁻ derived from methanol by loss of a proton; any salt containing this anion