Static data members are not associated with any object. They exist even if no objects of the class have been defined. If the static member is declared thread_local(since C++11), there is one such object per thread. Otherwise, there is only one instance of the static data member in the entire program, with static storage duration. Static data members cannot be mutable.
Definition of MUSCLE for Kids. 1. : a tissue of the body consisting of long cells that can contract and produce motion. 2. : an organ of the body that is a mass of muscle tissue attached at either end (as to bones) so that it can make a body part move.. a: a body tissue consisting of long cells that contract when stimulated and produce motion b: an organ that is essentially a mass of muscle tissue attached at either end to a fixed point and that by contracting moves or checks the movement of a body part. 2.
Muscle definition, or 'getting ripped', refers to having your muscles appear more visibly and dramatically. A guy with a twelve-inch arm can have much more noticeable muscles than a guy with an eighteen-inch arm because he has better definition. Muscle definition is a function of two factors: 1) muscle size and, 2) percentage of bodyfat. If you want better definition you have to work on both elements. First, you reduce bodyfat simply by burning off all the excess fat you can.