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state function
This term is a technical specification used primarily in thermodynamics and physical chemistry. It describes a property that is determined solely by the current condition of a system, such as pressure, temperature, or volume, regardless of the history of how the system arrived at that state. This distinguishes it from path functions, such as heat or work, which depend on the specific transition process.
In academic and professional scientific discourse, the term is used to simplify complex calculations by allowing researchers to ignore the intermediate steps of a chemical reaction or physical change. It is almost exclusively found in formal scientific literature and textbooks, and is not used in general conversation.
Meanings
A property of a thermodynamic system that depends only on its current equilibrium state and not on the path or process by which the system reached that state.
The internal energy of a gas is a state function, meaning its value is independent of the process used to change the system's temperature.