allyl Meaning, Definition & Usage

  1. noun the univalent unsaturated organic radical C3H5; derived from propylene
    allyl radical; allyl group.

WordNet

Al"lyl noun
Etymology
L. allium garlic + -yl.
Definitions
  1. (Chem.) An organic radical, C3H5, existing especially in oils of garlic and mustard.

Webster 1913