Rotor Noun  The Turning Autogiro Helicopter Resulting Lift

au·to·ro·ta·tion
 \\-rō-ˈtā-shən\\ noun: the turning of the rotor of an autogiro or a helicopter with the resulting lift caused solely by the aerodynamic forces induced by motion of the rotor along its flight path
• au·to·ro·tate  \\-ˈrō-ˌtāt\\ intransitive verb

au·to·rotation
\| ̷ ̷(ˌ) ̷ ̷ at  I+\ noun
(-s)
Etymology: International Scientific Vocabulary aut- + rotation
: the turning of the rotor of an autogiro or a helicopter with resulting lift caused solely by the aerodynamic forces induced by motion of the rotor along its flight path
• au·to·rotational \“+\ adjective