(physics) A probability factor for the chance of two nuclear particles overcoming the Coulomb barrier in order to undergo nuclear reactions.

(physics) Synonym of Gamow factor

(physics) A rescaling of a nuclear reaction's total cross section to account for the Coulomb repulsion between the charged reactants. It determines the rates of nuclear fusion reactions that occur in the cores of stars.

(thermodynamics) A conceptual number, denoted by ω, useful in the description of fluids, derived from the reduced saturation vapor pressure and the reduced temperature.