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“Gyrostat. An instrument for illustrating the dynamics of rotation, composed of a box or case having a sharp bearing-edge in the form of a regular polygon, and containing a fly-wheel having its center and its direction of rotation in the plane of the bearing-edge.” -Whitney, 1911


William Dwight Whitney The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1911)


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