from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the outermost level of the land or sea
Sorry, no etymologies found.
The commission finally decided that the basis of its system should be the earth's polar quadrant -- that is, the precise distance on the earth's surface from the equator to the pole.
The term is used in two widely-different senses: (1) for the material of which the earth's surface is composed; (2) as the name of the planet on which man dwells.