Definition of Weber number in English:

Weber number

(also Weber's number)

Pronunciation /ˈveɪbə ˌnʌmbə/


  • The ratio between the inertial forces acting upon a fluid flowing through a fluid medium and its surface tension, frequently used in the study of the formation of bubbles and droplets; (occasionally also) the square root of this ratio.


1930s. In some forms from the genitive of the name of Moritz Weber, German naval engineer, who first defined the ratio in 1919 + number, after German webersche Zahl.