/ Dictionary / Index P pleomorphic: Meaning and Definition of Find definitions for: ple•o•mor•phic Pronunciation: (plē"u-môr'fik), [key] — adj. of, pertaining to, or characterized by pleomorphism; polymorphous. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pleomorphic (Thesaurus) pleochroism pleomorphism 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