autorotation noun. [,ɔ:tǝ(ʊ)rǝ(ʊ)'teɪʃ(ǝ)n] E20.
[from AUTO-¹ + ROTATION.]
1. Aeronautics. Rotation (esp. of rotor blades) not caused by engine power.

2. Rotation resulting from the shape or structure of an object (e.g. a winged seed). L20.

■ autorotate verb intrans. undergo autorotation E20.

[TahlilGaran] English Dictionary ▲