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A name numerous species of South American parrots of the genus Chrysotis Amazon ant (Zoöl.), a species of ant (Polyergus rufescens), of Europe and America. They seize by conquest the larvæ and nymphs other species and make slaves of them in their own nests.

A variety of crystallized quartz, of a purple or bluish violet color, of different shades. It is much used as a jeweler's stone. Oriental amethyst, the violet-blue variety of transparent crystallized corundum or sapphire.

A state of being amorphous; esp. a state of being without crystallization even in the minutest particles, as in glass, opal, etc.

Without crystallization in the ultimate texture of a solid substance; uncrystallized.

al embracing many varieties varying in color and in composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties a…

A glucoside extracted from bitter almonds as a white, crystalline substance.

A white or flesh-red mineral, of the zeolite, occurring in isometric crystals. By friction, it acquires a weak electricity; hence its name.

A crystalline compound used as an antipyretic and analgesic, employed chiefly in rheumatism and neuralgia. It is a complex derivative of quinoline.

red analogous to natural death. J. H. Newman. nalogous pole (Pyroelect.), that pole of a crystal which becomes positively electrified when heated.

An acrid, poisonous, crystallizable substance, obtained from, the anemone, or from anemonin.

An acrid, poisonous, crystallizable substance, obtained from some species of anemone.

g from the preternatural dilation or rupture of the coats of an artery. [Written also aneurysm.]

rtaining to an aneurism; as, an aneurismal tumor; aneurismal diathesis. [Written also aneurysmal.]

A native sulphate of lead. It occurs in white or yellowish transparent, prismatic crystals.

Not isometric; having unsymmetrical parts; -- said of crystals with three unequal axes. Dana.

Not isotropic; having different properties in different directions; thus, crystals of the isometric system are optically isotropic, but all other crystals are anisotropic.

Having unequal oblique axes; as, anorthic crystals.

A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It is a lime feldspar. See Feldspar.

rary name or character; -- opposed to analogous. Antilogous pole (Eccl.), that pole of a crystal which becomes negatively electrified when heated.

An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy is the use of powerful convex lenses. Dunglison.