/ˈbjuːtɪl/, /ˈbjuːtaɪl/
OriginPIE word
*gʷṓws
From but- + -yl.
- Any of four isomeric univalent hydrocarbon radicals, C₄H₉, formally derived from butane by the loss of a hydrogen atom.
- A synthetic rubber made by the polymerization of isobutylene.
Formsbutyls(plural)