(historical) A former province of South Africa (1910–1994), now the province of Free State. / (historical) A former independent Boer republic in southern Africa (1854–1902).

(basketball) A line parallel to the baseline, fifteen feet from the plane of the backboard, from behind which a free throw may be taken.

non-esterified fatty acid

(physics, thermodynamics) A measure of the useful work obtainable from a constant temperature, constant volume thermodynamic system; more precisely, the difference between internal energy (of a system) and the product of its absolute temperature and entropy.

Able to do as one pleases, unconstrained by social ties or responsibilities.

(computing theory) A formal grammar in which every production rule is such that the left-hand side is exactly one non-terminal symbol and the right-hand side is zero or more terminal symbols and/or nonterminal symbols.

(physics, chemistry, thermodynamics) The difference between the enthalpy of a system and the product of its entropy and absolute temperature: a measure of the useful work obtainable from a thermodynamic system at constant temperature and pressure.

(basketball) The rectangular or trapezoidal area between the free-throw line and the end line.

An international region in which obstacles to unrestricted trade have been reduced to a minimum.

An area in which the local or regional authorities have banned nuclear weapons and nuclear power stations.