Search Result for "butyl": 
Wordnet 3.0

NOUN (1)

1. a hydrocarbon radical (C4H9);


The Collaborative International Dictionary of English v.0.48:

Butyl \Bu"tyl\, n. [L. butyrum butter + -yl. See Butter.] (Chem.) A compound radical, regarded as butane, less one atom of hydrogen. [1913 Webster]
WordNet (r) 3.0 (2006):

butyl n 1: a hydrocarbon radical (C4H9)