/ Dictionary / Index O ordinal: Meaning and Definition of Find definitions for: or•di•nal Pronunciation: (ôr'dn-ul), [key] — adj. of or pertaining to an order, as of animals or plants. of or pertaining to order, rank, or position in a series. —n. an ordinal number or numeral. or•di•nal Pronunciation: (ôr'dn-ul), [key] — n. a directory of ecclesiastical services. a book containing the forms for the ordination of priests, consecration of bishops, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ordinal (Thesaurus) order port ordinal number Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language