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Of or pertaining to the Bryozoa. -- n.

An individual zooid of a bryozoan coralline, of which there may be two or more kinds in a single colony. The zooecia usually have a wreath of tentacles around the mouth, and a well developed stomach and intestinal canal; but these parts are lacking in the other zooids (Avicularia, Ooecia, etc.).

The common tissue which unites the various zooids of a bryozoan.

Formerly any slender coral-like animal; -- sometimes applied more particulary to bryozoan corals.

A bryozoan of the genus Flustra.

Any bryozoan of the genus Lunulites, having a more or less circular form.

A coral, or corallum; also, one of the coral-like structure made by bryozoans and hydroids.

Any one of several species of bryozoans of the genus Retepora. They form delicate calcareous corals, usually composed of thin fenestrated fronds.

Any bryozoan of the genus Flustra or allied genera which form frondlike corals.

Any branched marine bryozoan resembling moss.

Any bryozoan which forms rounded or irregular patches of coral on stones, seaweeds, etc.

A young larval form of many annelids, mollusks, and bryozoans, in which a circle of cilia is developed around the anterior end.

A cavity into which, in certain bryozoans, the esophagus and anus open.

One of the movable, slender, spinelike organs or parts with which certain bryozoans are furnished. They are regarded as specially modified zooids, of nearly the same nature as Avicularia.

ants in appearance, or mode of growth, as the corals, gorgonians, sea anemones, hydroids, bryozoans, sponges, etc., especially any of those that form compound colonies having a branched or treelike form, as many corals and hydroids.