the world > movement > motion in specific manner > revolution or rotation > [noun] > swirling or eddying > a vortical motion > a vortex (5)
transferred. A whirling mass or system; a vortex; a whirl; an eddy, a whirlpool. Also figurative.
In modern scientific use: A rapid movement of particles of matter round an axis; a whirl of atoms, fluid, or vapour.