PROPYL
propyl, propyl group, propyl radical
(noun) the monovalent organic group C3H7- obtained from propane
Source: WordNet® 3.1
Etymology
Noun
propyl (plural propyls)
(organic chemistry) Either of two isomeric univalent hydrocarbon radicals, C3H7, formally derived from propane by the loss of a hydrogen atom.
Source: Wiktionary
Pro"pyl, n. Etym: [Propionic + -yl.] (Chem.)
Definition: The hypothetical radical C3H7, regarded as the essential
residue of propane and related compounds.
Source: Webster’s Unabridged Dictionary 1913 Edition