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Atacamite :: Atacamite (n.) An oxychloride of copper, usually in emerald-green prismatic crystals..

Parallelopiped :: Parallelopiped (n.) A solid, the faces of which are six parallelograms, the opposite pairs being parallel, and equal to each other; a prism whose base is a parallelogram..

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

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

Zoisite :: Zoisite (n.) A grayish or whitish mineral occurring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote..

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..

Prismatic :: Prismatic (a.) Alt. of Prismatica.

Diprismatic :: Diprismatic (a.) Doubly prismatic.

Flint Glass :: Flint glass () A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass..

Prismoid :: Prismoid (n.) A body that approaches to the form of a prism.

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..

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

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..

Macropyramid :: Macropyramid (n.) See Macroprism.

Goethite :: Goethite (n.) A hydrous oxide of iron, occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color varies from yellowish to blackish brown..

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

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..

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

Teinoscope :: Teinoscope (n.) An instrument formed by combining prisms so as to correct the chromatic aberration of the light while linear dimensions of objects seen through the prisms are increased or diminished; -- called also prism telescope.

Lanarkite :: Lanarkite (n.) A mineral consisting of sulphate of lead, occurring either massive or in long slender prisms, of a greenish white or gray color..

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