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The bending of a limb or joint; that motion of a joint which gives the distal member a continually decreasing angle with the axis of the proximal part; -- distinguished from extension.

o called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass.

One of a group of stalked rotifers, having ciliated tentacles around the lobed disk.

ev. xv. 24. Animal flower (Zoöl.) See under Animal. -- Cut flowers, flowers cut from the stalk, as for making a bouquet. -- Flower bed, a plat in a garden for the cultivation of flowers. -- Flower beetle (Zoöl.), any beetle which feeds upon flowers, esp. any one of numerous small species of the genus Meligethes, fam…

ucture characteristic of certain volcanic rocks in which the arrangement of the minute crystals shows the lines of flow of thew molten material before solidification; -- also called fluxion structure.

A white crystalline hydrocarbon C

A colorless, crystalline hydrocarbon, C13H10 having a beautiful violet fluorescence; whence its name. It occurs in the higher boiling products of coal tar, and is obtained artificially.

A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.…

their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance has of modifying the light incident upon it. The light emitted by fluoresc…

many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.

rregular white spots. It has a distinct volva at the base, generally an upper ring on the stalk, and white spores. Called also fly agaric, deadly amanita.

That which is fed out to cattle horses, and sheep, as hay, cornstalks, vegetables, etc.

Furnished with leaves; leafy; as, a foliate stalk. Foliate curve. (Geom.) Same as Folium.

Laminated, but restricted to the variety of laminated structure found in crystalline schist, as mica schist, etc.; schistose.

The property, possessed by some crystalline rocks, of dividing into plates or slabs, which is due to the cleavage structure of one of the constituents, as mica or hornblende. It may sometimes include slaty structure or cleavage, though the latter is usually independent of any mineral constituent, and transverse to the…

A kind of soft sweetmeat made by boiling solutions to the point of crystallization, usually molded; as, cherry fondant.

The combination of planes included under a general crystallographic symbol. It is not necessarily a closed solid.

established order; conventional rule of procedure; usual method; habitual mode. He was installed with all the usual formalities. C. Middleton.

A compound or twin crystal consisting of four individuals.

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.