Wordnet 3.0
ADJECTIVE (1)
1. 
 derived from two separately fertilized eggs; 
- Example: "dizygotic twins"[syn: dizygotic, dizygous]
WordNet (r) 3.0 (2006):
dizygous
    adj 1: derived from two separately fertilized eggs; "dizygotic
           twins" [syn: dizygotic, dizygous]