
1) Chemical compound 2) Compound 3) Sulfide
Found on
https://www.crosswordclues.com/clue/sulphide

1) Pyrites 2) Sulfide
Found on
https://www.crosswordclues.com/clue/sulphide

• (n.) A binary compound of sulphur, or one so regarded; -- formerly called sulphuret.
Found on
http://thinkexist.com/dictionary/meaning/sulphide/

White ceramic cameos and medallions embedded in clear glass, a technique believed to have been first patented in 1818 by Pierre-Honoré Boudon de Saint-Amans. A thin layer of air under the glass gives them a silvery appearance. Sulphides are seen set in paperweights, in the base of goblets, perfume bottles and tumblers, and were widely produc...
Found on
http://www.antique-marks.com/antique-terms-s.html

<chemistry> A binary compound of sulphur, or one so regarded; formerly called sulphuret. ... Metallic sulphide, a binary compound of sulphur with a metal. ... (04 Mar 1998) ...
Found on
http://www.encyclo.co.uk/local/20973
Sul'phide noun (Chemistry) A binary compound of sulphur, or one so regarded; -- formerly called
sulphuret .
Double sulphide (Chemistry) ,
a compound of two sulphides. --
Hydrogen sulphide .
(Chemistry) See under Hydrogen . --
...Found on
http://www.encyclo.co.uk/webster/S/236

metalliferous minerals formed with sulphur and often iron.
Found on
https://copperfoxmetals.com/investors/glossary-of-terms/

Compound of sulphur and another element in which sulphur is the more electronegative element (see electronegativity). Sulphides occur in many minerals, for example pyrite, or `fool's gold`, which is a sulphide of iron. Some of the more volatile sulphides have extremely unpleasant odours (hydrogen sulphide smells of bad eggs)
Found on
https://www.encyclo.co.uk/local/21221

A compound of sulphur and some other element.
Found on
https://www.encyclo.co.uk/local/22733
No exact match found.