• Noun

    Geometry . any unbroken part of the circumference of a circle or other curved line.
    Also called electric arc. Electricity . a luminous bridge formed in a gap between two electrodes. Compare spark 1 ( def. 2 ) .
    Astronomy . the part of a circle representing the apparent course of a heavenly body.
    anything bow-shaped.

    Verb (used without object)

    to form an electric arc.
    to move in a curve suggestive of an arc.

    Synonyms

    tác giả


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