Mach

Definitions

1. A surname from Czech.
2. A ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds; always precedes the Mach number.
   uncountable
3. Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
4. Clipping of Machiavellian.
   abbreviation, alt-of, clipping, countable, informal

Equivalents

Examples

“The jet traveled at Mach 3.”

“The 1992 review⟳ concluded that Machs are generally less satisfied with their jobs.”

CEFR level