A rotational motion of a fluid in which there is circulation about certain vortex-filaments, and no circulation except about them.(noun)
The Century Dictionary (Public Domain)
Use "vortex-motion" in a sentence
"But in 1858 the equations of motion of an incompressible frictionless fluid were first successfully solved by Helmholtz, and among other things he proved that, though vortex-motion could not be originated in such a fluid, yet supposing it once to exist, it would exist to all eternity and could not be diminished by any mechanical action whatever."
"Once admit even the most infinitesimal amount of friction, while retaining the conception of vortex-motion in a universal fluid, and the whole case is so far altered that the material atom can no longer be regarded as absolutely indestructible, but only as indefinitely enduring."
"The india-rubber has then what is called vortex-motion."