hyposulfite
hy.po.sul.fite \.hi--po--'s*l-.fi-t\ n [hyposulfurous acid] 1: THIOSULFATE - used chiefly in photography 2: HYDROSULFITE
hy.po.sul.fite \.hi--po--'s*l-.fi-t\ n [hyposulfurous acid] 1: THIOSULFATE - used chiefly in photography 2: HYDROSULFITE