from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The geometry of circles, angles, and figures on the surface of a sphere.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The non-Euclidean geometry on the surface of a sphere.
from the GNU version of the Collaborative International Dictionary of English
- adj. that branch of geometry which treats of spherical magnitudes; the doctrine of the sphere, especially of the circles described on its surface.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (mathematics) the geometry of figures on the surface of a sphere
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