Definitions for mach number
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Random House Webster's College Dictionary
mach′(n.)
(or Mach′ ) num`ber
Category: Physics
Ref: mach. 1
Origin of mach number:
1935–40
Princeton's WordNet
Mach number(noun)
the ratio of the speed of a moving body to the speed of sound
Wiktionary
Mach number(Noun)
The ratio of the velocity of a body to that of sound in the surrounding medium.
Origin: After the physicist Ernst Mach.
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