A form of molding/moulding in which molten plastic is placed inside a rotating mold/mould.

Alternative spelling of rotational molding

(physics) The rotation of the plane of polarization of plane polarized light as it passes through a chiral medium

rotational period

(of an astronomic object) The time taken to rotate about its axis relative to the background stars.

plural of axis of rotation

(physics) An interaction between a polarized electromagnetic pulse, such as a beam of light, and a magnetic field, in which the plane of polarization is rotated in proportion to the intensity of the component of the magnetic field in the direction of travel of the pulse.

(agriculture) A farming practice in which the same land is used to grow different crops in successive seasons or years (when once the land would have been left fallow); used to prevent erosion and increase fertility.

(chemistry, of a compound) [α]_D, the angle of rotation of the plane of polarization of a ray of monochromatic light that passes through 10cm of the substance in solution at a concentration of 1 gram per millilitre

The rotary, rather than propulsive, motion produced by a propeller. / (mechanics) The rotation of the inner and outer parts of a bearing race.