n. [ F. sylphide, fem. See Sylph. ] A little sylph; a young or diminutive sylph. “The place of the sylphid queen.” J. R. Drake. [ 1913 Webster ]

Ye sylphs and sylphids, to your chief give ear,
Fays, fairies, genii, elves, and demons, hear. Pope. [ 1913 Webster ]

n. (Chem.) A binary compound of sulphur, or one so regarded; -- formerly called sulphuret. [ 1913 Webster ]

Double sulphide (Chem.), a compound of two sulphides. --
Hydrogen sulphide. (Chem.) See under Hydrogen. --
Metallic sulphide, a binary compound of sulphur with a metal. [ 1913 Webster ]