/ Thesaurus / S Synonyms of solar parallax Find synonyms for: Noun1. solar parallax, geocentric parallax, diurnal parallaxusage: the angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unitWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language