Wordnet 3.0
NOUN (2)
1. 
 a Greek who was a Christian theologian active in Alexandria and who was declared a heretic for his doctrines about God (which came to be known as Arianism) (256?-336); 
2. 
 type genus of the Ariidae: sea catfishes; 
[syn: Arius, genus Arius]
WordNet (r) 3.0 (2006):
Arius
    n 1: a Greek who was a Christian theologian active in Alexandria
         and who was declared a heretic for his doctrines about God
         (which came to be known as Arianism) (256?-336)
    2: type genus of the Ariidae: sea catfishes [syn: Arius,
       genus Arius]