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

subspecies \subspe"cies\, n.
   a group somewhat lessdistinct than speciesusually are, but
   based on characters more important than those which
   characterize ordinary varieties; often, a geographical
   variety or race.
   1913 webster

[2] : WordNet (r) 2.0

subspecies
     n : biology a taxonomic group that is a division of a species;
         usually arises as a consequence of geographical isolation
         within a species syn: race
see also:
race 

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