- A whirling motion - Revolution - Rotation - Spiral - Spiral motion - The act of turning or whirling, as around a fixed center;
a circular or spiral motion; motion about an axis; rotation;
revolution. - One of the whorls of a spiral univalve shell.
- Eddy - Whirling motion - Whirlpool - A mass of fluid, especially of a liquid, having a whirling
or circular motion tending to form a cavity or vacuum in the center of
the circle, and to draw in towards the center bodies subject to its
action; the form assumed by a fluid in such motion; a whirlpool; an
eddy. - A supposed collection of particles of very subtile matter,
endowed with a rapid rotary motion around an axis which was also the
axis of a sun or a planet. Descartes attempted to account for the
formation of the universe, and the movements of the bodies composing
it, by a theory of vortices. - Any one of numerous species of small Turbellaria belonging
to Vortex and allied genera. See Illustration in Appendix.