MACH NUMBER


Meaning of MACH NUMBER in English

noun Etymology: Ernst Mach died 1916 Austrian physicist Date: 1937 a number representing the ratio of the speed of a body (as an aircraft) to the speed of sound in a surrounding medium (as air)

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.