Search Result for "superorder": 
Wordnet 3.0

NOUN (1)

1. (biology) a taxonomic group ranking above an order and below a class or subclass; 



The Collaborative International Dictionary of English v.0.48:

Superorder \Su`per*or"der\, n. (Zool.)
   A group intermediate in importance between an order and a
   subclass.
   [1913 Webster]


WordNet (r) 3.0 (2006):

superorder
    n 1: (biology) a taxonomic group ranking above an order and
         below a class or subclass