- any sulphide containing three sulphur atoms per molecule
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for trisulphide
On heating in absence of air, it decomposes into the trisulphide and sulphur.
The triselenide is less volatile than the trisulphide, and is pale green in color.
The two sulphides of antimony are called the trisulphide and the pentasulphide respectively.An Elementary Study of Chemistry