noun. The univalent, unsaturated organic group C₃H₅.

noun. An organic radical, C₃H₅, which does not exist in the free state.

noun. An organic radical, C3H5, existing especially in oils of garlic and mustard.

noun. An organic radical, CH2=CH-CH2-, existing especially in oils of garlic and mustard.

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

"Some scientists believe the components in onions and garlic called allyl sulfides and bioflavonoids may be key to the research observations of generally lower incidence of cancer and heart disease in people who consume large amounts of garlic and onions, compared with those who eat less."

allyl sulphid  sulphocarbamide of allyl  

chemical group  group  radical  

acetyl  allylic  anhydrous  benzyl  chavicol