/ Dictionary / Index C columnar epithelium: Meaning and Definition of Find definitions for: colum'nar epithe'lium Pronunciation: [key] — Biol. Biol. epithelium consisting of one or more layers of elongated cells of cylindrical or prismatic shape. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. columnar columnarized Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language