the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom
"The organic chemist explained that replacing a hydrogen atom on ethane creates an ethyl group, which then serves as a key building block for many common solvents."
The univalent hydrocarbon radical, C₂H₅, formally derived from ethane by the loss of a hydrogen atom.
"The chemist explained that when ethanol is oxidized without further treatment, it forms an aldehyde containing an ethyl group attached to the carbonyl carbon."
Alternative form of Ethel: a female given name.
"My grandmother went by Ethyl as a nickname, though her real name was actually Ethel."