autorotation

noun

The rotation of the blades of a helicopter driven solely by the action of ascending air

Similar Words

auth authentic /ɒ.ˈθɛn.tɪk/ authenticate /ɔ.ˈθɛn.tɪ.keɪt/ authenticated authenticates authenticating authentication authenticity /ɑθənˈtɪsɪti/ authored authorisation