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fluid coupling

noun
1.
Machinery. an apparatus in which a fluid, usually oil, transmits torque from one shaft to another, producing an equal torque in the other shaft.
Also called hydraulic coupling.
Origin
1935-1940
1935-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for fluid coupling
  • The waves travel up the pipe to the surface in a compression mode minimizing losses related to fluid coupling and tubing threads.

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