Definitions for mach number

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Random House Webster's College Dictionary

mach′(n.)

(or Mach′ ) num`ber

  1. Category: Physics

    Ref: mach. 1

Origin of mach number:

1935–40

Princeton's WordNet

  1. Mach number(noun)

    the ratio of the speed of a moving body to the speed of sound

Wiktionary

  1. Mach number(Noun)

    The ratio of the velocity of a body to that of sound in the surrounding medium.

  2. Origin: After the physicist Ernst Mach.


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