See Also: hydrosulphurous(medicine)
hydrosulphurous(dictionary)

hydrosulphurous (iou)



hydrosulphurous adjective. Also hydrosulfurous. M19.
[from HYDRO- + SULPHUROUS.]
Chemistry. hydrosulphurous acid: an unstable acid, H2S2O4, that is known only in solution and is a strong reducing agent; formerly, dithionic acid, H2S2O6.