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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 electric arc

From: Webster's Revised Unabridged Dictionary (1913)

 Arc n.
 1. Geom. 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.

From: WordNet (r) 2.0

 electric arc
      n : electrical conduction through a gas in an applied electric
          field [syn: discharge, spark, arc, electric