thermodynamics n.
the science which addresses the relationships between heat and mechanical energy (work), and the conversion of either into the other; classical thermodynamics deals with the properties of systems in which temperature is a necessary coordinate; informational thermodynamics deals with the information conveyed by a communicating system; statistical thermodynamics deals with the organized complexity (order) of a structured system.
unequivocal adj.
certain; capable of having only one meaning or interpretation; unambiguous.
uniformitarianism n.
the belief and assumption that most or all known natural processes (e.g., sedimentation, erosion, weather patterns) have always operated similarly and at the same rates throughout history.