[1] : The Collaborative International Dictionary of English v.0.48

subclass \sub"class`\, n.
   one of the natural groups, more important than an order, into
   which some classes are divided; as, the angiospermous
   subclass of exogens.
   1913 webster

[2] : WordNet (r) 2.0

subclass
     n : biology a taxonomic category below a class and above an
         order

[3] : Moby Thesaurus II by Grady Ward, 1.0

24 moby thesaurus words for "subclass":
   biotype, branch, class, family, genotype, genus, kingdom, order,
   phylum, section, series, species, subfamily, subgenus, subkingdom,
   suborder, subspecies, subtribe, superclass, superfamily,
   superorder, superspecies, tribe, variety

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

subclass
     
        derived class
     
     
see also:
derived class 

Subclass >> S Words
Subclass, definition of term: Subclass
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