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propfan

[prop-fan]
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noun
  1. Aeronautics. a turbojet having a turbine-driven propeller that operates completely outside the jet engine.
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Compare turbofan, turboprop.

Origin of propfan

First recorded in 1965–70; prop3 + fan1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018