propfan

[ prop-fan ]
/ ˈprɒpˌfæn /

noun

Aeronautics. a turbojet having a turbine-driven propeller that operates completely outside the jet engine.

Origin of propfan

First recorded in 1965–70; prop3 + fan1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019