1. In physics, a slight irregular motion in which the axis of rotation of a largely axially symmetric object such as a gyroscope or a planet.
2. In sex, an act during
intercourse in which gyration by the receiving partner (usually on top) resulting in a slightly irregular circular movement of the penis within an orifice while the depth of
penetration remains constant.
3.In
molecular biology, to mix a solution by rocking in a slightly irregular manner using a nutator.