Word Study
amyl
CIDE DICTIONARY
amyl, n. [L. amylum starch + -yl. Cf. Amidin.].
A univalent hydrocarbon radical, C5H11 , of the paraffine series found in amyl alcohol or fusel oil, etc. [1913 Webster]
OXFORD DICTIONARY
amyl, n. (used attrib.) Chem. the monovalent group C5H11-, derived from pentane. Also called PENTYL.
Etymology
L amylum starch, from which oil containing it was distilled
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