Instance variable

Member variable of a class that all its objects possess a copy of

In class-based, object-oriented programming, an instance variable is a variable defined in a class, for which each instantiated object of the class has a separate copy, or instance. An instance variable has similarities with a class variable, but is non-static. An instance variable is a variable which is declared in a class but outside of constructors, methods, or blocks. Instance variables are created when an object is instantiated, and are accessible to all the constructors, methods, or blocks in the class. Access modifiers can be given to the instance variable.

This keyword could refer to multiple things. Here are some suggestions: