sulphide
nounUK /ˈsʌlfaɪd/
US /ˈsʌlfaɪd/
A sulphide is a chemical compound made of sulphur and another element.
The rocks near the volcano contain iron sulphide.
OTHER MEANINGS
2. A salt or ester of hydrogen sulphide.
Sodium sulphide is used in the paper industry.
3. A mineral that is a compound of sulphur with a metal.
Galena is a lead sulphide ore.
4. The British spelling of sulfide, used especially in chemistry.
The textbook uses 'sulphide' throughout its chemistry chapters.