• Webster's Revised Unabridged Dictionary
    • n Polyzoarium (Zoöl) Same as Polyzoary.
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Century Dictionary and Cyclopedia
    • n polyzoarium A compound polyzoan; the common stock of a set of polyzoan polypides, the result of repeated gemmation from a single embryo. Every individual zoöid of the aggregation is a polypide; the common stock consists of an ectocyst and an endocyst, the former furnishing the special cells or cups in which each polypide is contained. See cuts under Polyzoa, Plumatella, and vibraculum.
    • ***
Chambers's Twentieth Century Dictionary
    • ns Polyzoarium a compound polyzoan
    • ***


Webster's Revised Unabridged Dictionary
Chambers's Twentieth Century Dictionary
Gr. polys, many, zōon, an animal.


In literature:

Polyzoarium entirely divided into ligulate dichotomous bi or multiserial branches; back nearly covered by large vibracula; avicularia sessile.
"Narrative Of The Voyage Of H.M.S. Rattlesnake, Commanded By The Late Captain Owen Stanley, R.N., F.R.S. Etc. During The Years 1846-1850. Including Discoveries And Surveys In New Guinea, The Louisiade Archipelago, Etc. To Which Is Added The Account Of Mr. E.B. Kennedy's Expedition For The Exploration Of The Cape York Peninsula. By John Macgillivray, F.R.G.S. Naturalist To The Expedition. In Two Volumes. Volume 1." by John MacGillivray