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Prism :: Prism (n.) A transparent body, with usually three rectangular plane faces or sides, and two equal and parallel triangular ends or bases; -- used in experiments on refraction, dispersion, etc..

Vessel :: Vessel (n.) A continuous tube formed from superposed large cylindrical or prismatic cells (tracheae), which have lost their intervening partitions, and are usually marked with dots, pits, rings, or spirals by internal deposition of secondary membranes; a duct..

Prismatical :: Prismatical (a.) Separated or distributed by a prism; formed by a prism; as, prismatic colors..

Cylinder :: Cylinder (n.) The revolving square prism carrying the cards in a Jacquard loom.

Iridescent :: Iridescent (a.) Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass..

Topaz :: Topaz (n.) A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem..

Sulphur :: Sulphur (n.) A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out. Symbol S. Atomic weight 32. The specific gravity of ordinary octohedral sulphur is 2.05; of prismatic sulphur, 1.96..

Spectrum :: Spectrum (n.) The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope..

Cantharidin :: Cantharidin (n.) The active principle of the cantharis, or Spanish fly, a volatile, acrid, bitter solid, crystallizing in four-sided prisms..

Refringent :: Refringent (a.) Pertaining to, or possessing, refringency; refractive; refracting; as, a refringent prism of spar..

Traject :: Traject (v. t.) To throw or cast through, over, or across; as, to traject the sun's light through three or more cross prisms..

Orthite :: Orthite (n.) A variety of allanite occurring in slender prismatic crystals.

Brachydiagonal :: Brachydiagonal (n.) The shorter of the diagonals in a rhombic prism.

Pyroxene :: Pyroxene (n.) A common mineral occurring in monoclinic crystals, with a prismatic angle of nearly 90¡, and also in massive forms which are often laminated. It varies in color from white to dark green and black, and includes many varieties differing in color and composition, as diopside, malacolite, salite, coccolite, augite, etc. They are all silicates of lime and magnesia with sometimes alumina and iron. Pyroxene is an essential constituent of many rocks, especially basic igneous rocks, as basa

Taurine :: Taurine (n.) A body occurring in small quantity in the juices of muscle, in the lungs, and elsewhere, but especially in the bile, where it is found as a component part of taurocholic acid, from which it can be prepared by decomposition of the acid. It crystallizes in colorless, regular six-sided prisms, and is especially characterized by containing both nitrogen and sulphur, being chemically amido-isethionic acid, C2H7NSO3..

Spoffish :: Spodumene (n.) A mineral of a white to yellowish, purplish, or emerald-green color, occuring in prismatic crystals, often of great size. It is a silicate of aluminia and lithia. See Hiddenite..

Iridal :: Iridal (a.) Of or pertaining to the iris or rainbow; prismatic; as, the iridal colors..

Prismatoidal :: Prismatoidal (a.) Having a prismlike form.

Diamond :: Diamond (n.) A precious stone or gem excelling in brilliancy and beautiful play of prismatic colors, and remarkable for extreme hardness..

Macropyramid :: Macropyramid (n.) See Macroprism.

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