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

Terebene :: Terebene (n.) A polymeric modification of terpene, obtained as a white crystalline camphorlike substance; -- called also camphene. By extension, any one of a group of related substances..

Boron :: Boron (n.) A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B..

Pinacoid :: Pinacoid (n.) A plane parallel to two of the crystalline axes.

Phenacite :: Phenacite (n.) A glassy colorless mineral occurring in rhombohedral crystals, sometimes used as a gem. It is a silicate of glucina, and receives its name from its deceptive similarity to quartz..

Oxamide :: Oxamide (n) A white crystalline neutral substance (C2O2(NH2)2) obtained by treating ethyl oxalate with ammonia. It is the acid amide of oxalic acid. Formerly called also oxalamide.

Volborthite :: Volborthite (n.) A mineral occurring in small six-sided tabular crystals of a green or yellow color. It is a hydrous vanadate of copper and lime.

Periclasite :: Periclasite (n.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals..

Naphthol :: Naphthol (n.) Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor..

Edingtonite :: Edingtonite (n.) A grayish white zeolitic mineral, in tetragonal crystals. It is a hydrous silicate of alumina and baryta..

Luxullianite :: Luxullianite (n.) A kind of granite from Luxullian, Cornwall, characterized by the presence of radiating groups of minute tourmaline crystals..

Halometer :: Halometer (n.) An instrument for measuring the forms and angles of salts and crystals; a goniometer.

Ice Plant :: Ice plant () A plant (Mesembryanthemum crystallinum), sprinkled with pellucid, watery vesicles, which glisten like ice. It is native along the Mediterranean, in the Canaries, and in South Africa. Its juice is said to be demulcent and diuretic; its ashes are used in Spain in making glass..

Pseudo-cone :: Pseudo-cone (n.) One of the soft gelatinous cones found in the compound eyes of certain insects, taking the place of the crystalline cones of others..

Caryophyllin :: Caryophyllin (n.) A tasteless and odorless crystalline substance, extracted from cloves, polymeric with common camphor..

Nitranilic :: Nitranilic (a.) Of, pertaining to, or designating, a complex organic acid produced as a white crystalline substance by the action of nitrous acid on hydroquinone..

Crystallographer :: Crystallographer (n.) One who describes crystals, or the manner of their formation; one versed in crystallography..

Sperrylite :: Sperrylite (n.) An arsenide of platinum occuring in grains and minute isometric crystals of tin-white color. It is found near Sudbury, Ontario Canada, and is the only known compound of platinum occuring in nature..

Dextrose :: Dextrose (n.) A sirupy, or white crystalline, variety of sugar, C6H12O6 (so called from turning the plane of polarization to the right), occurring in many ripe fruits. Dextrose and levulose are obtained by the inversion of cane sugar or sucrose, and hence called invert sugar. Dextrose is chiefly obtained by the action of heat and acids on starch, and hence called also starch sugar. It is also formed from starchy food by the action of the amylolytic ferments of saliva and pancreatic juice..

Styptic :: Styphnic (a.) Pertaining to, or designating, a yellow crystalline astringent acid, (NO2)3.C6H.(OH)2, obtained by the action of nitric acid on resorcin. Styphnic acid resembles picric acid, but is not bitter. It acts like a strong dibasic acid, having a series of well defined salts..

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