What does methylate mean?
Methylate is a technical verb used in chemistry to describe adding or introducing a methyl group, –CH₃, into a chemical compound. In many reactions, methylate specifically means replacing a hydrogen atom with this group, although the term can also refer more broadly to treatment with a methylating agent. The word is especially common in discussions of organic synthesis, pharmaceuticals, and molecular biology. In biology, methylation is an important biochemical process in which small methyl groups are attached to molecules such as DNA, RNA, and proteins, often affecting how those molecules function. Because “methylate” is a specialized term, it is most appropriate in scientific and technical contexts rather than in ordinary conversation. Its related noun, “methylation,” names both the chemical process and the biological modification itself.
verbTo introduce a methyl group into a chemical compound, usually by replacing a hydrogen atom with a –CH₃ group. More broadly, to treat a substance with a methylating agent or methyl compound.
- To introduce a methyl group into a chemical compound.
- To treat a substance with a methylating agent.
"The chemist used methyl iodide to methylate the alcohol."
"The reaction methylates the amine and improves its solubility in organic solvents."
"Genes can be silenced when cellular enzymes methylate particular regions of DNA."
Methylation is how cells switch genes on and off by attaching tiny –CH₃ groups to molecules such as DNA.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does methylate come from?
The verb was formed in the 19th century from “methyl,” meaning a hydrocarbon group derived from methane, together with the suffix “-ate,” used in chemical terminology to indicate a process of addition or conversion. “Methyl” itself comes from Greek methyle, a shortened form of methylē meaning “methyl alcohol,” with the ultimate root connected to methu, “alcohol” or “drink.” The related names methane and methanol were subsequently applied to other compounds in the same chemical family.
Related word forms
How methylate is actually used
This is primarily technical chemical terminology. In organic chemistry, it often means replacing a hydrogen atom with a methyl group, though the broader sense can include adding methyl groups to a molecule.
Easily confused with methylate
Methyl is the hydrocarbon group –CH₃, whereas methylate is the verb describing the introduction of that group into a compound.