/ Dictionary / Index P pyrrolidine: Meaning and Definition of Find definitions for: pyr•rol•i•dine Pronunciation: (pi-rō'li-dēn", -din, -rol'i-), [key] — n. Chem. a colorless, water-soluble, unpleasant smelling, poisonous liquid, CHN, from which proline and certain alkaloids are derived, prepared by reducing pyrrole: used chiefly in organic synthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyrrole Pyrrophyta Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language