/ Dictionary / Index C columnar: Meaning and Definition of Find definitions for: co•lum•nar Pronunciation: (ku-lum'nur), [key] — adj. shaped like a column. characterized by columns: columnar architecture. printed, arranged, etc., in columns: data in columnar form. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: columnar (Thesaurus) column columnar epithelium Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language