from the GNU version of the Collaborative International Dictionary of English
- adj. See under Parallax.
- n. the parallax of a body with reference to the earth's center. This is the kind of parallax that is generally understood when the term is used without qualification.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the parallax of a celestial body using two points on the surface of the earth as the earth rotates
Sorry, no etymologies found.