What is "glyceryl"

Glyceryl \Glyc"er*yl\, n. [Glycerin + -yl.] (Chem.) A compound radical, C3H5, regarded as the essential radical of glycerin. It is metameric with allyl. Called also propenyl.

n. (context organic chemistry English) Either of the univalent, divalent or trivalent radicals derived from glycerol by removing hydrogen atoms from one, two or three hydroxyl groups

n. a trivalent radical derived from glycerol by removing the three hydroxyl radicals