WordReference Random House Unabridged Dictionary of American English © 2025
Im•mel•mann
(im′əl män′, -mən),USA pronunciation n.
- Aeronauticsa maneuver in which an airplane makes a half loop, then resumes its normal, level position by making a half roll: used to gain altitude while turning to fly in the opposite direction. Also called Im′melmann turn′.
- after Max Immelmann (1890-1916), German aviator of World War I, who is said to have devised it 1915–20