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A form of impulse turbine or water wheel, consisting of a row of double cup-shaped buckets arranged round the rim of a wheel and actuated by one or more jets of water playing into the cups at high velocity.

A picture, or combination of pictures, consisting of a centerpiece and double folding doors or wings, as for an altarpiece.

r or five species, one is a shrub; the rest are perennial herbs with showy flowers, often double in cultivation. [Written also pæony, and piony.]

The double baglike fold of serous membrane which incloses the heart.

capsule of mosses. It consists of 4, 8, 16, 32, or 64 teeth, and may be either single or double.

A double-lens instrument for measuring slight variations of the sun's diameter by photography, utilizing the common chord of two overlapping images.

laceous genus Dianthus, and to their flowers, which are sometimes very fragrant and often double in cultivated varieties. The species are mostly perennial herbs, with opposite linear leaves, and handsome five- petaled flowers with a tubular calyx.

To fold; to double in narrow folds; to pleat; as, to plait a ruffle.

Folded; doubled over; braided; figuratively, involved; intricate; artful. Time shall unfold what plaited cunning hides. Shak.

A double chloride of platinum and some other metal or radical; a salt of platinochloric acid.

A double cyanide of platinum and some other metal or radical; a salt of platinocyanic acid.

ponge (Chem.), metallic platinum in a gray, porous, spongy form, obtained by reducing the double chloride of platinum and ammonium. It absorbs oxygen, hydrogen, and certain other gases, to a high degree, and is employed as an agent in oxidizing.

[Obs.] Bacon. -- A play upon words, the use of a word in such a way as to be capable of double meaning; punning. -- Play of colors, prismatic variation of colors. -- To bring into play, To come into play, to bring or come into use or exercise. -- To hold in play, to keep occupied or employed. I, with two more to h…

having a plunger, instead of a piston, to act upon the water. It may be single-acting or double- acting

y; as, to ply one with questions, with solicitations, or with drink. And plies him with redoubled strokes Dryden. He plies the duke at morning and at night. Shak.

two stars) makes with another fixed line, specifically with a circle of declination. -- Double position (Arith.), the method of solving problems by proceeding with each of two assumed numbers, according to the conditions of the problem, and by comparing the difference of the results with those of the numbers, deducin…

A quilted military doublet or gambeson worn in the 14th and 15th centuries; also, a name for the doublet of the 16th and 17th centuries worn by civilians.

A primary planet; the brighter component of a double star. See under Planet.

rince; a prince of players. "The prince of learning." Peacham. Prince-Albert coat, a long double-breasted frock coat for men. -- Prince of the blood, Prince consort, Prince of darkness. See under Blood, Consort, and Darkness. -- Prince of Wales, the oldest son of the English sovereign. -- Prince's feather (Bot.), a…

he two parts again joined with transparent cement, so that the ordinary image produced by double refraction is thrown out of the field by total reflection from the internal cemented surface, and the extraordinary, or polarized, image alone is transmitted.