DuckCorp Dico

Found one definition

1.                 From en.wikipedia.org:
                   
   
   
                   
                     
   [subclass] SUBCLASS may refer to:
   
    - Subclass (taxonomy) , a taxonomic rank below "class"
    - Subclass (computer science)
    - Subclass (set theory)
    - Subclass (knowledge representation)
   ** See also
   
    - Superclass
   [disambiguation]