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1. (n) the act of rotating as if on an axis; "the rotation of the dancer kept time with the music"
2. (n) (mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin
3. (n) a single complete turn (axial or orbital) "the plane made three rotations before it crashed" "the revolution of the earth about the sun takes one year"
4. (n) a planned recurrent sequence (of crops or personnel etc.) "crop rotation makes a balanced demand on the fertility of the soil" "the manager had only four starting pitchers in his rotation"
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