/ Thesaurus / O Synonyms of ordinal number Find synonyms for: Noun1. ordinal number, ordinal, no., numberusage: the number designating place in an ordered sequenceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language