- a collection of distinct, individual zooids that make up a compound or colonial organism.
- the supporting structure for a polyp colony; polyzoarium.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for zoarium
The zoarium is of delicate appearance and branches sparingly.
The zoarium consists of a circular or oval mass of no great size.
It possesses a creeping "sole" or organ of progression at the base of the zoarium.
Major Walton found it growing over a zoarium of Hislopia lacustris.
The zoœcia are not distinct from one another, but in dendritic forms the zoarium is divided irregularly by chitinous partitions.