physical property - a property used to characterize physical objects

conformational entropy - entropy calculated from the probability that a state could be reached by chance alone

thermodynamics - the branch of physics concerned with the conversion of different forms of energy

unregularity, irregularity - not characterized by a fixed principle or rate; at irregular intervals

ergodicity - an attribute of stochastic systems; generally, a system that tends in probability to a limiting form that is independent of the initial conditions