English
hydroselenide
From hydro- + selenide.
Proto-Indo-European *wed- ‘water’
Proto-Indo-European *wódr̥ ‘water’
Proto-Hellenic *údōr ‘water’
Ancient Greek ῡ̆̔́δωρ ‘water’
English hydro-
Today it means
noun Any compound formally derived from hydrogen selenide by replacing one hydrogen atom with a metal or other radical
Language periods are conventional ranges, not dates for this word.
Etymograph / hydroselenide