-yl

-yl

Chemical suffix signifying that the substance is a radical by loss of an H atom (for example, alkyl, methyl, phenyl) or OH group (for example, acyl, acetyl, carbamoyl).

-yl

suffix used in naming radicals: benzoyl, ethyl, hydroxyl.

-yl

Chemical suffix signifying that the substance is a radical by loss of an H atom (e.g., alkyl, methyl, phenyl) or OH group (e.g., acyl, acetyl, carbamoyl).

-yl

[Gr. hylē, wood, matter, substance]

Suffix in chemistry used in naming radicals, e.g., acyl.