from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A part of a spherical surface that is bounded by arcs of three or more great circles.
from the GNU version of the Collaborative International Dictionary of English
- adj. portion of the surface of a sphere bounded by the arcs of three or more great circles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a figure on the surface of a sphere bounded by arcs of 3 or more great circles
Sorry, no etymologies found.