n. (of a class)
an object the class of which is either that class itself,
or some subclass of that class. (Because of the correspondence between
types and classes, the term "generalized instance of X"
implies "object of type X" and in cases where X is a class
(or class name) the reverse is also true.
The former terminology emphasizes the view of X as a class
while the latter emphasizes the view of X as a type specifier.)