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.
The Heimlich maneuver is best performed from a standing position, behind and above the person whose airway is obstructed. To perform the manuever, put your arms around the pâ¦erson's waist. Clench your fist and place it just above their belly button, then put your other hand on top.