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Same as Orthorhombic.

Possessing the qualities of a prism, obliquely inclined to a rhombic base; monoclinic.

Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.

A silicate of aluminium, occurring usually in thick rhombic prisms, nearly square, of a grayish or pale reddish tint. It was first discovered in Andalusia, Spain.

Pertaining to the shorter diagonal, as of a rhombic prism. Brachydiagonal axis, the shorter lateral axis of an orthorhombic crystal.

A plane of an orthorhombic crystal which is parallel both to the vertical axis and to the shorter lateral (brachydiagonal) axis.

hence identical with rutile and octahedrite in composition, but crystallizing in the orthorhombic system.

An iron-black mineral of metallic luster, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver.

A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.

of ganoid fishes, including the modern gar pikes and many allied fossil forms. They have rhombic, ganoid scales, a heterocercal tail, paired fins without an axis, fulcra on the fins, and a bony skeleton, with the vertebræ convex in front and concave behind, forming a ball and socket joint. See Ganoidel.…

rted (into a specified substance or material); as, monoclinic sulphur goes over into orthorhombic, by standing; sucrose goes over into dextrose and levulose. -- To go through. (a) To accomplish; as, to go through a work. (b) To suffer; to endure to the end; as, to go through a surgical operation or a tedious illness.…

An orthorhombic mineral of the pyroxene group, of a grayish or greenish black color, often with a peculiar bronzelike luster (schiller) on the cleavage surface.

A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper.

The longer of two diagonals, as of a rhombic prism. See Crystallization.

A dome parallel to the longer lateral axis of an orthorhombic crystal. See Dome, n., 4.

One of the two planes of an orthorhombic crystal which are parallel to the vertical and longer lateral (macrodiagonal) axes.

A prism of an orthorhombic crystal between the macropinacoid and the unit prism; the corresponding pyramids are called macropyramids.

orth America. It is common on stone walls and on the trunks of trees, and has trifoliate, rhombic-ovate, variously notched leaves. Many people are poisoned by it, if they touch the leaves. See Poison sumac. Called also poison oak, and mercury. -- Poison nut. (Bot.) (a) Nux vomica. (b) The tree which yields this seed (…

Same as Orthorhombic. Prismatic borax (Chem.), borax crystallized in the form of oblique prisms, with ten molecules of water; -- distinguished from octahedral borax. -- Prismatic colors (Opt.), the seven colors into which light is resolved when passed through a prism; primary colors. See Primary colors, under Color.…

A ganoid fish having rhombic enameled scales; one of the Rhomboganoidei.