n. (Chem.) Any compound of ethyl of a binary type; as, potassium ethide. [ 1913 Webster ]

n. [ From Ether. ] (Chem.) Ethylidene. [ Obs. ] [ 1913 Webster ]

n. [ See Methyl. ] (Chem.) A binary compound of methyl with some element; as, aluminium methide, Al2(CH3)6. [ 1913 Webster ]