/ Dictionary / Index P polymorph: Meaning and Definition of Find definitions for: pol•y•morph Pronunciation: (pol'ē-môrf"), [key] — n. an organism having more than one adult form, as the different castes in social ants. any of the crystal forms assumed by a substance that exhibits polymorphism. granulocyte. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: polymorph (Thesaurus) polymethyl methacrylate polymorphism 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