English

Noun

Mach number ‎(uncountable)

1. (physics) The ratio of the velocity of a body to that of sound in the surrounding medium.

Translations

See also

• subsonic : under Mach 1
• transonic : around Mach 1
• supersonic : Mach 1
• hypersonic : at or over Mach 5

References

• JP 1-02 Department of Defense Dictionary of Military and Associated Terms