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fats (esp. beef fat) by separating the greater portion of the solid fat or stearin, by crystallization. It is mainly a mixture of olein and palmitin with some little stearin.

A white crystalline substance, obtained from an exudation from the olive, and having a bitter-sweet taste and acid proporties. [Written also olivile.] Gregory.

A white crystalline waxy substance extracted from the root of the leguminous plant Ononis spinosa.

A colorless crystalline substance, C6H3.CH3.(OH)2, which is obtained from certain lichens (Roccella, Lecanora, etc.), also from extract of aloes, and artificially from certain derivatives of toluene. It changes readily into orcein.

A white crystalline substance which is obtained indirectly from the root of an umbelliferous plant (Imperatoria Oreoselinum), and yields resorcin on decomposition.

d artificially as an amorphous lemonyellow powder, and occurring naturally as a yellow crystalline mineral; -- formerly called auripigment. It is used in king's yellow, in white Indian fire, and in certain technical processes, as indigo printing. Our orpiment and sublimed mercurie. Chaucer. Red orpiment, realgar; the r…

ating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.

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

Having the axes at right angles to one another; -- said of crystals or crystalline forms.

Noting the system of crystallization which has three unequal axes at right angles to each other; trimetric. See Crystallization.

were formerly improperly called osmites. -- Osmic tetroxide (Chem.), a white volatile crystalline substance, OsO4, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlor…

A micaceous mineral occurring in small scales. It is characteristic of certain crystalline schists.

O3 obtained from alloxan (or when urea is fused with ethyl oxamate), as a stable white crystalline powder; -- called also oxaluramide.

A white crystalline nitrogenous substance (C6H4N4O5) obtained by the reduction of parabanic acid; -- called also leucoturic acid.

on a large scale, by the action of fused caustic soda or potash on sawdust, as a white crystalline substance, which has a strong acid taste, and is poisonous in large doses. It is used in dyeing, calico printing, bleaching flax and straw, the preparation of formic acid, and in salts of lemon for removing ink stains, mo…

rogenous acid related to the ureids, and obtained from parabanic acid as a white silky crystalline substance.

Ethyl oxamate, obtained as a white scaly crystalline powder.

Methyl oxamate, obtained as a pearly white crystalline substance.

Pertaining to, or designating, an acid NH2.C2O2.HO obtained as a fine crystalline powder, intermediate between oxalic acid and oxamide. Its ammonium salt is obtained by boiling oxamide with ammonia.

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.