thermodynamics
Meaning
the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy) and the conversion of one into another.
the principles governing these processes, especially as applied to the functioning of engines or other systems.
Structure
Usage
the first law of thermodynamics states that energy cannot be created or destroyed, only transformed.
engineers must apply the principles of thermodynamics when designing more efficient engines.
her research in thermodynamics focuses on entropy changes in chemical reactions.
Etymology
the term thermodynamics is a modern scientific compound, constructed in the 19th century from classical greek elements to precisely describe a new field of physics. the first part, 'thermo-', derives from the greek word 'thermos' (hot, heat), which is itself traceable to the pie root gʷʰer- (to heat, warm). the second part, 'dynamics', originates from the greek 'dynamis' (power, force), a concept linked to the pie root deu- (to do, perform, show favor). the compound thus literally means "the science of heat power," elegantly capturing the core subject of energy conversion and the mechanical action resulting from heat, which moved from a literal description to a formalized set of abstract physical laws.
Analysis
- thermo: from greek 'thermos', meaning 'hot' or 'heat'. functions as a combining form. - dynamics: from greek 'dynamikos', meaning 'powerful' or 'pertaining to force', from 'dynamis' (power). functions as a noun-forming element meaning 'the science of forces in motion'.