FORMYL

Etymology

Noun

formyl (plural formyls)

(organic chemistry) The univalent radical -CHO, derived from formaldehyde, that is characteristic of aldehydes

Source: Wiktionary

For"myl, n. Etym: [Formic + -yl.] (Chem.) (a) A univalent radical, H.C:O, regarded as the essential residue of formic acid and aldehyde. (b) Formerly, the radical methyl, CH3.

Source: Webster’s Unabridged Dictionary 1913 Edition