Dictionary

butyl

noun bu·tyl \ˈbyü-təl\

Definition of BUTYL

:  any of four isomeric alkyl radicals C4H9− derived from butane

Origin of BUTYL

International Scientific Vocabulary butyric + -yl
First Known Use: 1869

butyl

noun bu·tyl \ˈbyüt-əl\   (Medical Dictionary)

Medical Definition of BUTYL

:  any of four isomeric monovalent radicals C4H9 derived from butanes

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