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Definition of Flaperon
1. Noun. (''aeronautical'') An aircraft control surface at the trailing edge of a wing that acts as an aileron (controlling movement around the longitudinal axis) and a flap (changing the chord line of the wing, thus affecting the angle of attack). ¹
¹ Source: wiktionary.com
Definition of Flaperon
1. an airfoil that functions as a flap and an aileron [n -S]