Gyrátion. n.s. [gyro, Latin.] The act of turning any thing about.
This effluvium attenuateth and impelleth the neighbour air, which, returning home, in a gyration carrieth with it the obvious bodies into the electrick. Brown's Vulgar Errours.
If a burning coal be nimbly moved round in a circle with gyrations, continually repeated, the whole circle will appear like fire; the reason of which is, that the sensation of the coal in the several places of that circle remains impressed on the sensorium, until the coal return again to the same place. Newt.