A useful definition of entropy is “a function of the system equilibration,
stability, and inertness”, and the tendency to an overall increase of entropy, which is set
forth by the second law of thermodynamics, should be meant as “the tendency to the
most probable state”, that is, to a state having the highest equilibration, stability, and
inertness that the system can reach. The tendency to entropy increase is driven by the
probabilistic distributions of matter and energy and it is actualized by particle motion.
Keywords: Entropy, Equilibration, Stability, Inertness, Most probable state,
Spreading and sharing, Tendency.