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The Collaborative International Dictionary
Polyzoaria

Polyzoarium \Pol`y*zo*a"ri*um\, n.; pl. Polyzoaria. [NL.] (Zo["o]l.) Same as Polyzoary.

Wiktionary
polyzoaria

n. 1 (plural of polyzoarium English) 2 (plural of polyzoary English)

WordNet
polyzoaria