Wordnet 3.0
NOUN (1)
1. 
 sessile marine coelenterates including solitary and colonial polyps; 
 the medusoid phase is entirely suppressed; 
[syn: anthozoan, actinozoan]
The Collaborative International Dictionary of English v.0.48:
Anthozoan \An`tho*zo"an\, a. (Zool.)
   Pertaining to the Anthozoa. -- n. One of the Anthozoa.
   [1913 Webster]
WordNet (r) 3.0 (2006):
anthozoan
    n 1: sessile marine coelenterates including solitary and
         colonial polyps; the medusoid phase is entirely suppressed
         [syn: anthozoan, actinozoan]