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To separate by means of, or to subject to, fractional distillation or crystallization; to fractionate; -- frequently used with out; as, to fraction out a certain grade of oil from pretroleum.

l; inconsiderable; insignificant; as, a fractional part of the population. Fractional crystallization (Chem.), a process of gradual and approximate purification and separation, by means of repeated solution and crystallization therefrom. -- Fractional currency, small coin, or paper notes, in circulation, of less value…

The condition quality of being frail, physically, mentally, or morally, frailness; infirmity; weakness of resolution; liableness to be deceived or seduced. God knows our frailty, [and] pities our weakness. Locke.

or a species (Rhamnus Frangula) of the buckthorn. Frangulinic acid (Chem.), a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin.

A yellow crystalline dyestuff, regarded as a glucoside, extracted from a species (Rhamnus Frangula) of the buckthorn; -- called also rhamnoxanthin.

A colorless crystalline substance, regarded as a glucoside, and found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It shows a delicate fluorescence in alkaline solutions; -- called also paviin.

genus Hedysarum (H. coronarium); -- called also garland honeysuckle. -- French horn, a metallic wind instrument, consisting of a long tube twisted into circular folds and gradually expanding from the mouthpiece to the end at which the sound issues; -- called in France cor de chasse. -- French leave, an informal, hast…

Aniline red; an artificial coal-tar dyestuff, of a metallic green color superficially, resembling cantharides, but when dissolved forming a brilliant dark red. It consists of a hydrochloride or acetate of rosaniline. See Rosaniline.

cyanuric acids, and designating an acid so called. Fulminuric acid (Chem.), a white, crystalline, explosive subatance, H3C3N3O3, forming well known salts, and obtained from the fulnunates. It is isomeric with cyanuric acid, and hence is also called isocyanuric acid.

ic acid (Chem.), a widely occurring organic acid, exttracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid.…

An alkaloid extracted from fumitory, as a white crystalline substance.

A white, crystalline base, obtained indirectly from furfurol.

A yellow, crystalline substance, (C4H3O)2.C2O2, obtained by the oxidation of furoin. [Written also furil.]

A colorless, crystalline substance, C10H8O4, from furfurol.

. Watery fusion (Chem.) the melting of certain crystals by heat in their own water of crystallization.

serpentine, later to the rock called euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).

A supposed rare metallic element, with a characteristic spectrum, found associated with yttrium and other rare metals. Its individuality and properties have not yet been determined.

A white, crystalline sugar, C6H12O6, isomeric with dextrose, obtained by the decomposition of milk sugar, and also from certain gums. When oxidized it forms mucic acid. Called also lactose (though it is not lactose proper).

Lead sulphide; the principal ore of lead. It is of a bluish gray color and metallic luster, and is cubic in crystallization and cleavage. False galena. See Blende.

A red crystalline dyestuff, obtained by heating together pyrogallic and phthalic acids.