• Arc


    • UK IPA: /ɑːk/
    • Rhymes: -ɑː(ɹ)k
    • Homophones: ark


    From Middle English, from Old French arc, from Latin arcus ("a bow, arc, arch").

    Full definition of arc



    (plural arcs)
    1. (astronomy) That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon. from 14th c.
    2. (geometry) A continuous part of the circumference of a circle (circular arc) or of an other curve. from 16th c.
    3. A curve, in general. from 17th c.
    4. A band contained within parallel curves, or something of that shape. from 17th c.
    5. (electrics) A flow of current across an insulating medium; especially a hot, luminous discharge between either two electrodes or as lightning. from 19th c.
    6. A story arc. from 20th c.
    7. (mathematics) A continuous mapping from a real interval (typically 1) into a space.
    8. (graph theory) A directed edge.



    1. (intransitive) To move following a curved path.
      • 2011, February 4, Gareth Roberts, Wales 19-26 England, Gatland's side got back to within striking distance when fly-half Jones's clever pass sent centre Jonathan Davies arcing round Shontayne Hape.
    2. (intransitive) To form an electrical arc.

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