noun
: a sudden large increase in aerodynamic drag that occurs as the speed of an aircraft approaches the speed of sound and that is no longer an insurmountable obstacle to traveling faster than sound
noun
: a sudden large increase in aerodynamic drag that occurs as the speed of an aircraft approaches the speed of sound and that is no longer an insurmountable obstacle to traveling faster than sound
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012