Hypertext Webster Gateway: "Subclass"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (wn)
subclass
n : (biology) a taxonomic category below a class and above an
order
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