a salt, copper sulfate, CuSO 4 ⋅5H 2 O, occurring naturally as large transparent, deep-blue triclinic crystals, appearing in its anhydrous state as a white powder: used chiefly as a mordant, insecticide, fungicide, and in engraving.
the fully hydrated blue crystalline form of copper sulphate
A blue, crystalline compound of copper sulfate. Blue vitriol is soluble in water, and is a very important industrial salt of copper. It is used in insecticides and germicides, in electrolytes for batteries, and in electroplating baths. Chemical formula: CuSO4·5H2O.
any coral of the genus Heliopora, having brown polyps and a blue skeleton, found in the Indo-Pacific region.
an edible crab, Callinectes sapidus, having a dark green body and bluish legs, found along the Atlantic and Gulf coasts of North America.
the great blue heron.
a nonprofit organization that offers its members health insurance covering hospitalization, surgical, and medical expenses.