:Thank you Damorbel for your helpful suggestions. I have taken them aboard, and improved the wording in consequence, and supplied some references. The term thermodynamics is of historical origin, referring to heat engines. Due to that, the part-word -dynamics refers to the doing of work by the engine, which is of course a comcomitant of heat transfer through the engine, which accounts for the part-word thermo-. It is occasionally proposed in various writings that one might speak of 'thermostatics' because the classical subject admits only static or equilibrium states. This proposal does not adequately recognize the historical origin of the term thermodynamics.