reaction wheel

reaction wheel
Water wheel Wa"ter wheel` 1. Any wheel for propelling machinery or for other purposes, that is made to rotate by the direct action of water; -- called an {overshot wheel} when the water is applied at the top, an {undershot wheel} when at the bottom, a {breast wheel} when at an intermediate point; other forms are called {reaction wheel}, {vortex wheel}, {turbine wheel}, etc. [1913 Webster]

2. The paddle wheel of a steam vessel. [1913 Webster]

3. A wheel for raising water; a noria, or the like. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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