hydrosulfide
Noun
Meaning
(chemistry) Any compound formally derived from hydrogen sulfide by replacing one hydrogen atom with a metal or other radical; a thiol or mercaptan.
(chemistry) The HS anion.
Source: en.wiktionary.orgExamples
Dissolved sulfide and hydrosulfide salts are toxic by the same mechanism.
The upper clouds are composed of ammonia crystals, while the lower level clouds appear to consist of either ammonium hydrosulfide (NH 4 SH) or water.