the.com/methyl

means A methyl group is a single carbon atom bonded to three hydrogen atoms (CH3), the simplest building block that attaches to larger molecules in organic chemistry.

from From French 'méthyle,' coined in the 1830s by chemists, built from Greek 'methy' (wine) and 'hyle' (wood/matter) — because the group was first identified in 'wood spirit,' the old name for methanol, which was itself obtained by distilling wood. So the name literally traces back to 'wine-wood,' a nod to methanol's double life as both a wine-like liquid and a product of wood distillation.