/ Dictionary / Index P Polycrates: Meaning and Definition of Find definitions for: Po•lyc•ra•tes Pronunciation: (pu-lik'ru-tēz"), [key] — n. died 522?b.c.,Greek tyrant of Samos. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polycotyledon polycrystalline Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language