/ Dictionary / Index P pleural: Meaning and Definition of Find definitions for: pleu•ral Pronunciation: (ploor'ul), [key] — adj. of or pertaining to the pleura. of or pertaining to a pleuron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pleural (Thesaurus) pleura pleural cavity Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language