MACH NUMBER


Meaning of MACH NUMBER in English

Pronunciation: ' mäk-

Function: noun

Etymology: Ernst Mach † 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 Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.