/ Dictionary / Index P polyzoarium: Meaning and Definition of Find definitions for: pol•y•zo•ar•i•um Pronunciation: (pol"ē-zō-âr'ē-um), [key] — pl. -ar•i•a a bryozoan colony, or its supporting skeleton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyzoan polyzoic Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language