- sesquisulphuret
- Sesquisulphide Ses`qui*sul"phide, n. [Sesqui- + sulphide.] (Chem.) A sulphide, analogous to a sesquioxide, containing three atoms of sulphur to two of the other ingredient; -- formerly called also {sesquisulphuret}; as, orpiment, {As2S3} is arsenic sesquisulphide. [1913 Webster]
The Collaborative International Dictionary of English. 2000.