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ifically, designating an acid of the aromatic series, obtained from melilot as a white crystalline substance.

Pertaining to, or derived from, the mineral mellite. Mellitic acid (Chem.), a white, crystalline, organic substance, C6(CO2H)6, occurring naturally in combination with aluminium in the mineral mellite, and produced artificially by the oxidation of coal, graphite, etc., and hence called also graphitic acid.…

us indicus (the fruit of Anamirta Cocculus, formerly Menispermum Cocculus) as a white, crystalline, tasteless powder; -- called also menispermina.

A white, crystalline, aromatic substance resembling camphor, extracted from oil of peppermint (Mentha); -- called also mint camphor or peppermint camphor.

A crystalline substance obtained from mesitylene.

polymeric modification of acrolein obtained by heating it with caustic potash. It is a crystalline substance having an aromatic odor.

A white crystalline substance isomeric with, and obtained from, acetic aldehyde by polymerization, and reconvertible into the same.

cks may have undergone since their original deposition; -- especially applied to the recrystallization which sedimentary rocks have undergone through the influence of heat and pressure, after which they are called metamorphic rocks.

metamorphic; the process by which the material of rock masses has been more or less recrystallized by heat, pressure, etc., as in the change of sedimentary limestone to marble. Murchison.

c acid, HPO3, analogous to nitric acid, and, by heating phosphoric acid, obtained as a crystalline substance, commonly called glacial phosphoric acid.

chrysolite to serpentine; -- opposed to ordinary metamorphism, as implying simply a recrystallization. -- Met`a*so*mat"ic, a.

A stable crystalline compound obtained by the decomposition of hemoglobin. It is found in old blood stains.

ignating, a sulphonic (thionic) acid derivative of methane, obtained as a stable white crystalline substance, CH2.(SO3H)2, which forms well defined salts.

A white, silky, crystalline substance extracted from the thick rootstock of a species of pepper (Piper methysticum) of the South Sea Islands; -- called also kanakin.

Of or pertaining to the microcosm. Microcosmic salt (Chem.), a white crystalline substance obtained by mixing solutions of sodium phosphate and ammonium phosphate, and also called hydric-sodic- ammonic-phosphate. It is a powerful flux, and is used as a substitute for borax as a blowpipe reagent in testing for the metal…

neral, under Agaric. -- Sugar of milk. The sugar characteristic of milk; a hard white crystalline slightly sweet substance obtained by evaporation of the whey of milk. It is used in pellets and powder as a vehicle for homeopathic medicines, and as an article of diet. See Lactose.

nce occurring in nature, having a definite chemical composition and usually a distinct crystalline form. Rocks, except certain glassy igneous forms, are either simple minerals or aggregates of minerals.

A small projecting boss or bracket, on the under side of the hinged seat of a church stall (see Stall). It was intended, the seat being turned up, to give some support to a worshiper when standing. Called also misericordia.

A crystalline or frosted appearance produced by some acids on tin plate; also, the tin plate thus treated.

The thick, brown or dark colored, viscid, uncrystallizable sirup which drains from sugar, in the process of manufacture; any thick, viscid, sweet sirup made from vegetable juice or sap, as of the sorghum or maple. See Treacle.