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Orthoclase :: Orthoclase (n.) Common or potash feldspar crystallizing in the monoclinic system and having two cleavages at right angles to each other. See Feldspar.

Dipyridil :: Dipyridil (n.) A crystalline nitrogenous base, C10H8N2, obtained by the reduction of pyridine..

Amphibole :: Amphibole (n.) A common mineral 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 are tremolite, actinolite, asbestus, edenite, hornblende (the last name being also used as a general term for the whole species). Amphibole is a constit

Crystallin :: Crystallin (n.) See Gobulin.

Murexide :: Murexide (n.) A crystalline nitrogenous substance having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly called also ammonium purpurate..

Hunter :: Hunter (n.) A hunting watch, or one of which the crystal is protected by a metallic cover..

Erythrine :: Erythrine (n.) A colorless crystalline substance, C20H22O10, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid..

Macrodiagonal :: Macrodiagonal (n.) The longer of two diagonals, as of a rhombic prism. See Crystallization..

Crystallographical :: Crystallographical (a.) Pertaining to crystallography.

Ricinine :: Ricinine (n.) A bitter white crystalline alkaloid extracted from the seeds of the castor-oil plant.

Hesperidin :: Hesperidin (n.) A glucoside found in ripe and unripe fruit (as the orange), and extracted as a white crystalline substance..

Homoeomorphism :: Homoeomorphism (n.) A near similarity of crystalline forms between unlike chemical compounds. See Isomorphism.

Sylvanium :: Sylvanite (n.) A mineral, a telluride of gold and silver, of a steel-gray, silver-white, or brass-yellow color. It often occurs in implanted crystals resembling written characters, and hence is called graphic tellurium..

Narceine :: Narceine (n.) An alkaloid found in small quantities in opium, and extracted as a white crystalline substance of a bitter astringent taste. It is a narcotic. Called also narceia..

Boracite :: Boracite (n.) A mineral of a white or gray color occurring massive and in isometric crystals; in composition it is a magnesium borate with magnesium chloride.

Menaccanite :: Menaccanite (n.) An iron-black or steel-gray mineral, consisting chiefly of the oxides of iron and titanium. It is commonly massive, but occurs also in rhombohedral crystals. Called also titanic iron ore, and ilmenite..

Needle :: Needle (v. i.) To form needles; to crystallize in the form of needles.

Platinichloric :: Platinichloric (a.) Of, pertaining to, or designating, an acid consisting of platinic chloride and hydrochloric acid, and obtained as a brownish red crystalline substance, called platinichloric, or chloroplatinic, acid..

Crystalloid :: Crystalloid (n.) One of the microscopic particles resembling crystals, consisting of protein matter, which occur in certain plant cells; -- called also protein crystal..

Anemonic :: Anemonic (a.) An acrid, poisonous, crystallizable substance, obtained from, the anemone, or from anemonin..

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