/ Dictionary / Index P polysemy: Meaning and Definition of Find definitions for: pol•y•se•my Pronunciation: (pol'ē-sē"mē, pu-lis'u-mē), [key] — n. diversity of meanings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: polysemy (Thesaurus) poly sci polysepalous Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language