Definition of "polyzoa" []

• Plural form of polyzoon., tiny animals that form compound colonies (noun)
• The class of molluscs that the above belong to (noun)

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• "You will often find other forms of polyzoa in clear ponds and mill-pools; sometimes you would suppose you were looking at a mass of sponge, as in the case of"
• "It looks likely to contain some fresh-water polyzoa, than which there are few more beautiful tenants of the water."
• "Mollusca, rotifers, polyzoa, and such infusoria as are not included in types (1) and (2) belong to the massive type, in which the body and its parts form rounded masses."