geocentric parallax geo·cent·ric·parallax uncommon noun 1. the parallax of a celestial body using two points on the surface of the earth as the earth rotates Synonymsgeocentric parallaxdiurnal parallax Related words Broader terms parallax Narrower terms horizontal parallaxsolar parallax WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
