Definify.com

Webster 1913 Edition

{ ‖

or ‖

, }

Noun.

pl.

[NL., fr. Gr.

κοῖλοσ

hollow + [GREEK] intestines.]

(Zool.)

A comprehensive group of Invertebrata, mostly marine, comprising the

Anthozoa

Hydrozoa

, and

Ctenophora

. The name implies that the stomach and body cavities are one. The group is sometimes enlarged so as to include the sponges.

See also: Cœlenterata

Coelenterata

(obsolete) A taxonomic phylum within the subkingdom Metazoa – aquatic animals with simple tissue organization, radial symmetry and a hollow body cavity.