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  1. Dictionary
    arc
    /ɑːk/

    noun

    • 1. a part of a curve, especially a part of the circumference of a circle: "the point where a tangential line touches the arc of a circle"
    • 2. a luminous electrical discharge between two electrodes or other points: "modern welding generators are designed so that there is a high voltage for striking the arc"

    verb

    • 1. move with a curving trajectory: "the ball arced across the room"
    • 2. form an electric arc: "the outage was caused by a bad switch that arced"

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