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A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow); the arc of Hadley's quadrant.

Usually a curved member made up of separate wedge-shaped solids, with the joints between them disposed in the direction of the radii of the curve; used to support the wall or other weight above an opening. In this sense arches are segmental, round (i. e., semicircular), or pointed.

In England, an ecclesiastical dignitary, next in rank below a bishop, whom he assists, and by whom he is appointed, though with independent authority. Blackstone.

Of or pertaining to Archimedes, a celebrated Greek philosopher; constructed on the principle of Archimedes' screw; as, Archimedean drill, propeller, etc. Archimedean screw, or Archimedes' screw, an instrument, said to have been invented by Archimedes, for raising water, formed by winding a flexible tube round a cylinde…

ds or documents preserved as evidence of facts; as, the archives of a country or family. [Rarely used in sing.] Some rotten archive, rummaged out of some seldom explored press. Lamb.

sure of an angle (Math.), that in which the unit angle has its measuring arc equal to the radius of the circle.

Having the appearance or quality of fire; fierce; glowing; shining; as, ardent eyes. Dryden.

Heat, in a literal sense; as, the ardor of the sun's rays.

An extent of surface; a tract of the earth's surface; a region; as, vast uncultivated areas.

To raise; to set up; to stir up. [Obs.]

An acute and rugged crest of a mountain range or a subsidiary ridge between two mountain gorges.

ded as an element, contained in the atmosphere and remarkable for its chemical inertness. Rayleigh and Ramsay.

. [Obs.] There is.. no more palpable and convincing argument of the existence of a Deity. Ray. Why, then, is it made a badge of wit and an argument of parts for a man to commence atheist, and to cast off all belief of providence, all awe and reverence for religion South.

A variety of the gazelle (Antilope, or Gazella, dorcas), found in Arabia and adjacent countries. (b) A squirrel-like Australian marsupial, a species of Petaurus. (c) A beautiful Brazilian toucan Ramphastos ariel).

The Ram; the first of the twelve signs in the zodiac, which the sun enters at the vernal equinox, about the 21st of March.

To butt, as a ram. [Obs.]

The act of butting like a ram; act of using a battering-ram. [Obs.] Bacon.

n the Senate Right not our quest in this, I will protest them To all the world, no aristocracy. B. Jonson.

One of the aristocracy or people of rank in a community; one of a ruling class; a noble.

Belonging to armor, or to the heraldic arms or escutcheon of a family. Figures with armorial signs of race and birth. Wordsworth. Armorial bearings. See Arms, 4.