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One of the double teeth, used to grind or masticate the food; a molar.

A large and powerful, double-crested, short-winged American eagle (Thrasaëtus harpyia). It ranges from Texas to Brazil. Harpy bat (Zoöl.) (a) An East Indian fruit bat of the genus Harpyia (esp. H. cerphalotes), having prominent, tubular nostrils. (b) A small, insectivorous Indian bat (Harpiocephalus harpia). Harpy fly…

One of the sets of parallel doubled threads which, with mounting, compose the harness employed to guide the warp threads to the lathe or batten in a loom.

The edge or border of a garment or cloth, doubled over and sewed, to strengthen raveling.

justed to the true level artificially; -- used chiefly with the sextant for observing the double altitude of a celestial body. -- Celestial horizon. (Astron.) See def. 2, above. -- Dip of the horizon (Astron.), the vertical angle between the sensible horizon and a line to the visible horizon, the latter always being…

ine, phenyl hydrazine, etc. They are derivatives of hydrazine proper, H2N.NH2, which is a doubled amido group, recently (1887) isolated as a stable, colorless gas, with a peculiar, irritating odor. As a base it forms distinct salts. Called also diamide, amidogen, (or more properly diamidogen), etc.

Pertaining to, or denoting, a compound consisting of a double fluoride of hydrogen and silicon; silicofluoric. See Silicofluoric.

rs, forming the XVth and XVIth dynasties. It is now considered that the XVIth is merely a double of the XVth dynasty, and that the total period of the six Hyksos kings was little more than 100 years. It is supposed that they were Asiatic Semites.

obtained in Iceland. It is used for the prisms of the polariscope, because of its strong double refraction. Cf. Calcite.

An old game played with four dice. In signified a doublet, or two dice alike; in-and-in, either two doubles, or the four dice alike.

because, when light passes out of air into sulphur, the sine of the angle of incidence is double the sine of the angle of refraction. -- Index plate, a graduated circular plate, or one with circular rows of holes differently spaced; used in machines for graduating circles, cutting gear teeth, etc. -- Index prohibitor…

Redoubled; repeated. Jer. Taylor.

eral, thoroughly inwrought; forming an essential part of the substance. Ingrain carpet, a double or two-ply carpet. -- Triple ingrain carpet, a three-ply carpet.

-- Inner plate (Arch.), the wall plate which lies nearest to the center of the roof,in a double-plated roof. -- Inner post (Naut.), a piece brought on at the fore side of the main post, to support the transoms. -- Inner square (Carp.), the angle formed by the inner edges of a carpenter's square.

Said of double counterpoint, when an upper and a lower part change places.

ine, characterized by the minuteness and close arrangement of the tubes, as also by their double flexure. It is used in manufacturing articles of ornament or utility.

Double-faced; deceitful. Janus-faced lock, one having duplicate faces so as to go upon a right or a left hand door, the key entering on either side indifferently. Knight.

Double-headed.

A light tackle, consisting of a double and single block and the fall, used for various purposes, as to increase the purchase on a topsail sheet in hauling it home; the watch tackle. Totten.

or use, binding joist, bridging joist, ceiling joist, trimming joist, etc. See Illust. of Double-framed floor, under Double, a.