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A kind of pillar; a cylindrical or polygonal support for a roof, ceiling, statue, etc., somewhat ornamented, and usually composed of base, shaft, and capital. See Order.

for the second place. Dryden. Where competition does not act at all there is complete monopoly. A. T. Hadley.

or of acetone into mesitylene. Condensation product (Chem.), a substance obtained by the polymerization of one substance, or by the union of two or more, with or without separation of some unimportant side products. -- Surface condensation, the system of condensing steam by contact with cold metallic surfaces, in dis…

To undergo polymerization.

. See under Brain. -- Chain coral. See under Chain. -- Coral animal (Zoöl.), one of the polyps by which corals are formed. They are often very erroneously called coral insects. -- Coral fish. See in the Vocabulary. -- Coral reefs (Phys. Geog.), reefs, often of great extent, made up chiefly of fragments of corals, c…

A weed that binds stalks of corn, as Convolvulus arvensis, Polygonum Convolvulus. [Prov. Eng.]

The art of polyphony, or composite melody, i. e., melody not single, but moving attended by one or more related melodies.

A red powder (called also polychroite), which is made from the saffron (Crocus sativus). See Polychroite.

An order of ganoid fishes including among living species the bichir (Polypterus). See Brachioganoidei.

Smartweed (Polygonum Hydropiper).

A white amorphous substance, regarded as a polymeric modification of isocyanic acid.

Having separate petals; polypetalous.

A liquid hydrocarbon, C10H20, of the ethylene series, regarded as a polymeric form of amylene.

A polymeric form of pyridine, C10H10N2, obtained as a colorless oil by the action of sodium on pyridine.

A white amorphous substance obtained as a polymeric modification of acrolein.

A figure or polygon bounded by twelve sides and containing twelve angles.

ouble refraction. (Opt.) See Refraction. -- Double salt. (Chem.) (a) A mixed salt of any polybasic acid which has been saturated by different bases or basic radicals, as the double carbonate of sodium and potassium, NaKCO3.6H2O. (b) A molecular combination of two distinct salts, as common alum, which consists of the s…

A genus of bivalve shells of which one species (D. polymorpha) is often so abundant as to be very troublesome in the fresh waters of Europe.

s, of which the shaft of a column is composed; also, a vertical wall, whether circular or polygonal in plan, carrying a cupola or dome. (e) (Mach.)

plain, Then, hid in shades, eludes he eager swain. Pope. The transition from fetichism to polytheism seems a gradual process of which the stages elude close definition. Tylor.