designed to help correct or ameliorate the discomfort of disorders of the spine and joints: orthopaedic mattresses Collins English Dictionary - Complete & Unabridged 2012 Digital Edition Â© William Collins Sons & Co. Ltd. 1979, 1986 Â© HarperCollins
Definition of Immelmann. : a maneuver in which an airplane reverses direction by executing half of a loop upwards followed by half of a roll âcalled also Immelmann turn.
Updated July 13, 2016. The Epley maneuver is a treatment for a form of vertigo caused by a disorder called BPPV (Benign Paroxysmal Positional Vertigo). BPPV is thought to be caused by calcium deposits within the inner ear, known medically as otoconia.