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.
blue pike. a variety of the walleye, Strizostedion vitreum glaucum, inhabiting the Great Lakes.
designed to operate on and range over the open sea; oceangoing: a bluewater navy that can be dispatched throughout the world, far from its home base. Historical Examples Thrice Armed Harold Bindloss
See under wavey. a wild North American goose of the genus Chen, as the snow goose (white wavey) or blue goose (blue wavey) noun (Canadian) a snow goose or other wild goose Also called wawa
Also called blue thistle. a bristly weed, Echium vulgare, of the borage family, having showy blue flowers, a native of Europe naturalized in the U.S. chicory (def 1). noun (US) another name for viper’s bugloss