Definition of power law in US English:

power law


  • A relationship between two quantities such that one is proportional to a fixed power of the other.

    • ‘The researchers found that the relationship between the height of the wad and the applied mass was indeed a power law, although the exponent differed from their prediction.’
    • ‘A remarkable finding is that the spatial correlations over small length scales take the form of an inverse power law, indicating the fractal nature of the packing of the subcellular structures.’
    • ‘In other words, zooming in or out in the scale at which one studies the web, one keeps obtaining the same result, i.e. an inverse power law in the probability of finding a given feature.’
    • ‘In addition, this study also quantifies the power law in the interval between these extremes.’
    • ‘That is, the magnitude of the bursts of functional innovation following the addition of each successive level should follow a power law in which exponents for successive levels are multiplied.’