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Saleratus :: Saleratus (n.) Aerated salt; a white crystalline substance having an alkaline taste and reaction, consisting of sodium bicarbonate (see under Sodium.) It is largely used in cooking, with sour milk (lactic acid) or cream of tartar as a substitute for yeast. It is also an ingredient of most baking powders, and is used in the preparation of effervescing drinks..

Quinizarin :: Quinizarin () A yellow crystalline substance produced artificially. It is isomeric with alizarin.

Forestall :: Forestall (v. t.) To take possession of, in advance of some one or something else, to the exclusion or detriment of the latter; to get ahead of; to preoccupy; also, to exclude, hinder, or prevent, by prior occupation, or by measures taken in advance..

Phlogopite :: Phlogopite (n.) A kind of mica having generally a peculiar bronze-red or copperlike color and a pearly luster. It is a silicate of aluminia, with magnesia, potash, and some fluorine. It is characteristic of crystalline limestone or dolomite and serpentine. See Mica..

Cyanuric Acid :: Cyanuric acid () an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide..

Lithargyrum :: Lithargyrum (n.) Crystallized litharge, obtained by fusion in the form of fine yellow scales..

Crocose :: Crocose (n.) A white crystalline sugar, metameric with glucose, obtained from the coloring matter of saffron..

Eupittone :: Eupittone (n.) A yellow, crystalline substance, resembling aurin, and obtained by the oxidation of pittacal; -- called also eupittonic acid..

Violantin :: Violantin (n.) A complex nitrogenous substance, produced as a yellow crystalline substance, and regarded as a complex derivative of barbituric acid..

Sectant :: Sectant (n.) One of the portions of space bounded by the three coordinate planes. Specif. (Crystallog.), one of the parts of a crystal into which it is divided by the axial planes..

Orthometric :: Orthometric (a.) Having the axes at right angles to one another; -- said of crystals or crystalline forms.

Santal :: Santal (n.) A colorless crystalline substance, isomeric with piperonal, but having weak acid properties. It is extracted from sandalwood..

Urethane :: Urethane (n.) A white crystalline substance, NH2.CO.OC2H5, produced by the action of ammonia on ethyl carbonate. It is used somewhat in medicine as a hypnotic. By extension, any one of the series of related substances of which urethane proper is the type..

Scoparin :: Scoparin (n.) A yellow gelatinous or crystalline substance found in broom (Cytisus scoparius) accompanying sparteine.

Hypidiomorphic :: Hypidiomorphic (a.) Partly idiomorphic; -- said of rock a portion only of whose constituents have a distinct crystalline form.

Racemic :: Racemic (a.) Pertaining to, or designating, an acid found in many kinds of grapes. It is also obtained from tartaric acid, with which it is isomeric, and from sugar, gum, etc., by oxidation. It is a sour white crystalline substance, consisting of a combination of dextrorotatory and levorotatory tartaric acids..

Barbituric Acid :: Barbituric acid () A white, crystalline substance, CH2(CO.NH)2.CO, derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea..

Etherin :: Etherin (n.) A white, crystalline hydrocarbon, regarded as a polymeric variety of ethylene, obtained in heavy oil of wine, the residue left after making ether; -- formerly called also concrete oil of wine..

Naphthazarin :: Naphthazarin (n.) A dyestuff, resembling alizarin, obtained from naphthoquinone as a red crystalline substance with a bright green, metallic luster; -- called also naphthalizarin..

Neurine :: Neurine (n.) A poisonous organic base (a ptomaine) formed in the decomposition of protagon with boiling baryta water, and in the putrefraction of proteid matter. It was for a long time considered identical with choline, a crystalline body originally obtained from bile. Chemically, however, choline is oxyethyl-trimethyl-ammonium hydroxide, while neurine is vinyl-trimethyl-ammonium hydroxide..

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