vertical circle

/ˌvʌrdəkəl ˌsʌrkəl/
IPA guide

Other forms: vertical circles

Definitions of vertical circle
  1. noun
    a great circle on the celestial sphere passing through the zenith and perpendicular to the horizon
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    type of:
    great circle
    a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
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