The act of turning or whirling, especially around a fixed axis or centre; a circular or spiral motion; rotation.
The arrangement of convolutions of gyri in the cerebral cortex of the brain.
One of the whorls of a spiral univalve shell.
A rotation around an axis which is not the centre of rotational symmetry; an eccentric or off-centre rotation.
The act of turning around a centre or an axis.
The step during takeoff when the pilot commands the vehicle to lift the nose wheel off the ground during the takeoff roll. (see also: V2)
A regular variation in a sequence, such as to even-out wear, or people taking turns in a task; a duty roster.
A single complete cycle around a centre or an axis.
An operation on a metric space that is a continuous isometry and fixes at least one point.
The set of starting pitchers of a team.
Repeated play on a radio station, etc.
The earth's rotation about its axis is responsible for its being slightly oblate rather than a sphere.