anthozoa

from The Century Dictionary.

• The flower-animals, or animal-flowers; a former class or large group of zoöphytes, inexactly equivalent to the modern class Actinozoa (which see).

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) The class of the Cœlenterata which includes the corals and sea anemones. The three principal groups or orders are Acyonaria, Actinaria, and Madreporaria.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a large class of sedentary marine coelenterates that includes sea anemones and corals; the medusoid phase is entirely suppressed