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copperas
cop·per·as C0629600 (kŏp′ər-əs)n. A green, crystalline heptahydrate mineral of ferrous sulfate, FeSO4·7H2O. Also called green vitriol.
[Middle English coperose, a metallic sulfate, from Old French, from Medieval Latin cuperōsa, probably short for *aqua cuprōsa, copper water, from Late Latin cuprum, copper; see copper1.]copperas (ˈkɒpərəs) n (Elements & Compounds) a less common name for ferrous sulphate[C14: coperose, via Old French from Medieval Latin cuperosa, perhaps originally in the phrase aqua cuprosa copper water]fer′rous sul′fate
n. a bluish green solid, FeSO4∙7H2O, used in the manufacture of other iron salts, in sewage treatment and fertilizers, and in the treatment of anemia. Also called copperas . [1860–65] copperas
copperas: the heptahydrate of ferrous sulfateferrous sulfate
or iron (II) sulfate,
chemical compound, FeSO4. It is known as the monohydrate, FeSO4·H2O; the tetrahydrate, FeSO4·4H2O; the pentahydrate, FeSO4·5H2
..... Click the link for more information. .copperas[′käp·ə·rəs] (inorganic chemistry) ferrous sulfate copperas
cop·per·as (kop'er-as), The impure commercial variety of ferrous sulfate.copperas (kŏp′ər-əs)n. A green, crystalline heptahydrate mineral of ferrous sulfate, FeSO4·7H2O. Also called green vitriol.copperas (kop'e-ras) [L. (aqua) cuprosa, coppery (water)] An impure form of ferrous sulfate formerly used as a disinfectant, deodorizer, and a treatment for iron deficiency. See: ferrous sulfate |