Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A circle described by the intersection of the surface of a sphere with a plane passing through the center of the sphere.
  • n. A segment of such a circle representing the shortest distance between two terrestrial points.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A circle defined as the intersection of the surface of a sphere and a plane which passes through the centre of the sphere.
  • n. A segment of such circle representing the shortest distance between two points on the surface of a sphere.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center

Etymologies

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Examples

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