Rotation: nf (word coming from the Latin rotatio, from rota: wheel).
The word “rotation” has many meanings:
1. Movement of a body that moves around an axis (material or not), during which each point of the body moves with the same angular speed (gyration).
Rotation of the Earth.
Period of rotation of a star.
Rotational speed of a drill. Drilling, drilling by rotation (rotary).
The rotation of the valve of a pressure cooker.
Geometry: Punctual transformation of a ...
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