释义 |
ferrous sulfate noun : an astringent salt FeSO4 obtained usually in the form of the pale green efflorescent crystalline heptahydrate FeSO4.7H2O as a by-product (as in pickling iron or steel) and used chiefly in making other iron salts, pigments, and ink, in treating industrial wastes, and in medicine especially for treating iron-deficiency anemia |