Noun
oxysulfide (plural oxysulfides)
A mixed oxide and sulfide.
Several other salts of berkelium are known, including an oxysulfide (Bk 2 O 2 S), and hydrated nitrate ( ), chloride ( ), sulfate ( ) and oxalate ( ). Source: Internet
Terbium doped gadolinium oxysulfide (Gd 2 O 2 S: Tb) at the phosphor layer converts the X-rays released from the source into light. Source: Internet