convertiplane(redirected from convertible helicopter)
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con·vert·i·planealso con·vert·a·plane (kən-vûr′tə-plān′)
An airplane having the ability to take off and land vertically, as by the use of large propellers that tilt upward to provide thrust.
(Aeronautics) an aircraft that can land and take off vertically by temporarily directing its propulsive thrust downwards
an aircraft capable of vertical flight like a helicopter and forward flight like a conventional airplane.