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on.), the degree or arc of the equator which descends, with a celestial object, below the horizon of an oblique sphere. -- Right descension, the degree or arc of the equator which descends below the horizon of a right sphere at the same time with the object. [Obs.]

style or gnomon is usually parallel to the earth's axis, but the dial plate may be either horizontal or vertical.

To incline downward from the plane of the horizon; as, strata of rock dip.

ight. -- Diurnal arc, the arc described by the sun during the daytime or while above the horizon; hence, the arc described by the moon or a star from rising to setting. -- Diurnal circle, the apparent circle described by a celestial body in consequence of the earth's rotation. -- Diurnal motion of the earth, the mot…

A prism formed by planes parallel to a lateral axis which meet above in a horizontal edge, like the roof of a house; also, one of the planes of such a form.

w or the lowest position, literally or figuratively; at the bottom of a decent; below the horizon; of the ground; in a condition of humility, dejection, misery, and the like; in a state of quiet. I was down and out of breath. Shak. The moon is down; I have not heard the clock. Shak. He that is down needs fear no fall.…

The horizontal thrust or pressure of an arch or vault upon the abutments. [R.] Knight.

That part of a cornice, sill course, or other horizontal member, which projects beyond the rest, and is of such section as to throw off the rain water. Right of drip (Law), an easement or servitude by which a man has the right to have the water flowing from his house fall on the land of his neighbor.…

To dig Horizontally; to cut a horizontal gallery or tunnel. Tomlinson.

elescope (hence its name) rigidly fixed to a table capable only of rotatory movement in a horizontal plane. The telescope is usually an inverting one. It is sometimes called the Troughton level, from the name of the inventor, and a variety improved by one Gavatt is known as the Gavatt level.

of partial intoxication. [Slang] Marryat. -- Dutch door, a door divided into two parts, horizontally, so arranged that the lower part can be shut and fastened, while the upper part remains open. -- Dutch foil, Dutch leaf, or Dutch gold, a kind of brass rich in copper, rolled or beaten into thin sheets, used in Holla…

See Elaterite. -- Elastic curve. (a) (Geom.) The curve made by a thin elastic rod fixed horizontally at one end and loaded at the other. (b) (Mech.) The figure assumed by the longitudinal axis of an originally straight bar under any system of bending forces. Rankine. -- Elastic fluids, those which have the property…

The distance of a celestial object above the horizon, or the arc of a vertical circle intercepted between it and the horizon; altitude; as, the elevation of the pole, or of a star.

The superstructure which lies horizontally upon the columns. See Illust. of Column, Cornice.

er. Taylor. On even ground, with equal advantage. -- On even keel (Naut.), in a level or horizontal position.

The state of being ven, level, or disturbed; smoothness; horizontal position; uniformity; impartiality; calmness; equanimity; appropriate place or level; as, evenness of surface, of a fluid at rest, of motion, of dealings, of temper, of condition. It had need be something extraordinary, that must warrant an ordinary pe…

The angular adjustment of an oar or paddle-wheel float, with reference to a horizontal axis, as it leaves or enters the water.

turning the blade of the oar, as it rises from the water in rowing, from a vertical to a horizontal position. See To feather an oar, under Feather, v. t.

A band drawn horizontally across the center of an escutcheon, and containing in breadth the third part of it; one of the nine honorable ordinaries. Fess point (Her.), the exact center of the escutcheon. See Escutcheon.

l monarchy, during which Christ would reign on earth a thousand years. -- Fifth wheel, a horizontal wheel or segment above the fore axle of a carriage and beneath the body, forming an extended support to prevent careening.