substance suffix utilized in creating names of radicals, from French -yle, from Greek hyle "wood," additionally "building things, raw product" (that anything is made), of unknown beginning. The utilization in chemistry traces to the second sense (except in methylene, where it means "wood"). It was introduced into chemical nomenclature by Liebig and Wohler whenever, in 1832, they used the expression benzoyle when it comes to radical which seemed to be the "essential product" of benzoic acid and related substances. [Flood]
A suffix utilized as a characteristic termination of substance radicals; such as ethyl, carbonyl, hydroxyl, etc.
A suffix used as a characteristic termination of chemical radicals; as with ethyl, carbonyl, hydroxyl, etc.