What is the meaning of rotation?

noun

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