Entry 1 sense Webster, 1913 Polyzoarium · Pol·y·zo·a·ri·um · IPA /ˌpɑ.li.zoʊˈɛɹ.i.əm/ 01 n. Same as Polyzoary. pl. Polyzoaria ((#)) 1. Same as Polyzoary.(Zool.) See: Polyzoary