Of a class: to be an extension or subtype of, or to be based on, a prototype or a more abstract class.
To reenlist for a further period.
To increase in quantity by weakening or adulterating additions.
To value, as lands taken by a writ of extent in satisfaction of a debt; to assign by writ of extent.
To straighten (a limb).
To increase in extent.
To cause to increase in extent.
To cause to last for a longer period of time.
To possess a certain extent; to cover an amount of space.
To bestow; to offer; to impart; to apply.
(in object-oriented programming) To create a subclass of (some class).
To cause (an object) to act as an instance of a subclass (by creating the desired subclass and instantiating an object of this subclass).
A rank directly below class.
A secondary class within a main class.
An object class derived from another class (its superclass) from which it inherits a base set of properties and methods.