1. (Geom.)
Defn: A portion of a curved line; as, the arc of a circle or of an ellipse.
2. A curvature in the shape of a circular arc or an arch; as, the colored arc (the rainbow); the arc of Hadley's quadrant.
3. An arch. [Obs.] Statues and trophies, and triumphal arcs. Milton.
4. The apparent arc described, above or below the horizon, by the sun or other celestial body. The diurnal arc is described during the daytime, the nocturnal arc during the night. Electric arc, Voltaic arc. See under Voltaic.
ARCADE Ar*cade", n. Etym: [F. arcade, Sp. arcada, LL. arcata, fr. L. arcus bow, arch.]
1. (Arch.) (a) A series of arches with the columns or piers which support them, the spandrels above, and other necessary appurtenances; sometimes open, serving as an entrance or to give light; sometimes closed at the back (as in the cut) and forming a decorative feature. (b) A long, arched building or gallery.
2. An arched or covered passageway or avenue.
ARCADED
Ar*cad"ed, a.
Defn: Furnished with an arcade.