/ Dictionary / Index P prolix: Meaning and Definition of Find definitions for: pro•lix Pronunciation: (prō-liks', prō'liks), [key] — adj. extended to great, unnecessary, or tedious length; long and wordy. (of a person) given to speaking or writing at great or tedious length. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prolix (Thesaurus) proline prolocutor Related Content Daily Word Quiz: jovial Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language