noun
Usage: usually capitalized M
Etymology: after Ernst Mach died 1916 Austrian physicist and philosopher
: the envelope of wave fronts propagated from an infinitesimal disturbance in a supersonic-flow field
noun
Usage: usually capitalized M
Etymology: after Ernst Mach died 1916 Austrian physicist and philosopher
: the envelope of wave fronts propagated from an infinitesimal disturbance in a supersonic-flow field
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012