Definition of Weber–Fechner in US English:

Weber–Fechner

noun

Psychology
  • Attributive, usually in "Weber–Fechner law". Designating a law stating that the smallest perceptible increase in a stimulus is a constant proportion of the initial stimulus (also called Weber's law); (also) designating a law stating that the strength of a sensation is a logarithmic function of the strength of the stimulus (also called Fechner's law).

Origin

Late 19th century. From the name of Ernst Heinrich Weber + the name of Gustav Theodor Fechner.

Pronunciation

Weber–Fechner

/ˌveɪbəˈfɛxnə/