Search the Dictionary

A section or part of a cylinder, cone, or other solid of revolution, cut off by a plane oblique to the base; -- so called from its resemblance to the hoof of a horse.

Having only one axis; developing along a single line or plane; -- opposed to multiaxial.

To remove, as a planet, from its sphere or orb. Shak.

Of or pertaining to the planet Uranus; as, the Uranian year.

One of the primary planets. It is about 1,800,000,000 miles from the sun, about 36,000 miles in diameter, and its period of revolution round the sun is nearly 84 of our years.

ste, and an odor of old cheese. Active valeric acid, a metameric variety which turns the plane of polarization to the right, although formed by the oxidation of a levorotatory amyl alcohol.

ath. Dict. -- Vanishing line (Persp.), the intersection of the parallel of any original plane and picture; one of the lines converging to the vanishing point. -- Vanishing point (Persp.), the point to which all parallel lines in the same plane tend in the representation. Gwilt. -- Vanishing stress (Phon.), stress of…

otion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light.

One of the planets, the second in order from the sun, its orbit lying between that of Mercury and that of the Earth, at a mean distance from the sun of about 67,000,000 miles. Its diameter is 7,700 miles, and its sidereal period 224.7 days. As the morning star, it was called by the ancients Lucifer; as the evening star…

Perpendicular to the plane of the horizon; upright; plumb; as, a vertical line. Vertical angle (Astron. & Geod.), an angle measured on a vertical circle, called an angle of elevation, or altitude, when reckoned from the horizon upward, and of depression when downward below the horizon. -- Vertical anthers (Bot.), such…

An asteroid, or minor planet, discovered by Olbers in 1807.

Near; vicine. T. Warton. Vicinal planes (Min.), subordinate planes on a crystal, which are very near to the fundamental planes in angles, and sometimes take their place. They have in general very complex symbols.

t inhabits grassy plains, and is noted for its extensive burrows and for heaping up miscellaneous articles at the mouth of its burrows. Called also biscacha, bizcacha, vischacha, vishatscha.

s the least distance from the sun at which, when the sun is below the horizon, a star or planet emerging from his rays becomes visible. -- Beatific vision (Theol.), the immediate sight of God in heaven. -- Direct vision (Opt.), vision when the image of the object falls directly on the yellow spot (see under Yellow);…

sual cone (Persp.), a cone whose vertex is at the point of sight, or the eye. -- Visual plane, any plane passing through the point of sight. -- Visual point, the point at which the visual rays unite; the position of the eye. -- Visual purple (Physiol.), a photochemical substance, of a purplish red color, contained i…

endowed with a rapid rotary motion around an axis which was also the axis of a sun or a planet. Descartes attempted to account for the formation of the universe, and the movements of the bodies composing it, by a theory of vortices.

To turn or twist out of shape; esp., to twist or bend out of a flat plane by contraction or otherwise. The planks looked warped. Coleridge. Walter warped his mouth at this To something so mock solemn, that I laughed. Tennyson.

The longitudinal guides, or guiding surfaces, on the bed of a planer, lathe, or the like, along which a table or carriage moves.

ther of a windmill sail, the obliquity of the sail, or the angle which it makes with its plane of revolution. -- Weather report, a daily report of meteorological observations, and of probable changes in the weather; esp., one published by government authority. -- Weather spy, a stargazer; one who foretells the weathe…

See under Fox. -- Spherical wedge (Geom.), the portion of a sphere included between two planes which intersect in a diameter.