Breadcrumb Home > Thesaurus > E Synonyms of equinoctial Find synonyms for: Noun 1. celestial equator, equinoctial circle, equinoctial line, equinoctial, great circle usage: the great circle on the celestial sphere midway between the celestial poles Adjective 1. equinoctial usage: relating to the vicinity of the equator 2. equinoctial usage: relating to an equinox (when the lengths of night and day are equal) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of equinoctial (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: apotheosis Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language