/sub"klas', -klahs'/ , n.
1. a primary division of a class.
2. a subordinate class, esp. one of persons who lack the rights and privileges of the primary class: a subclass of alien workers.
3. Biol. a category of related orders within a class.
v.t.
4. to place in a subclass.
[ 1810-20; SUB- + CLASS ]