Allyl

from WordNet (r) 3.0 (2006)
allyl
    n 1: the univalent unsaturated organic radical C3H5; derived
         from propylene [syn: {allyl}, {allyl group}, {allyl
         radical}]
from The Collaborative International Dictionary of English v.0.48
Allyl \Al"lyl\, n. [L. allium garlic + -yl.] (Chem.)
   An organic radical, {C3H5}, existing especially in oils of
   garlic and mustard.
   [1913 Webster]
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