/ Thesaurus / H Synonyms of horizontal parallax Find synonyms for: Noun1. horizontal parallax, geocentric parallax, diurnal parallaxusage: the maximum parallax observed when the celestial body is at the horizonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language