Mach Definition

mäk
noun
Webster's New World

(physics) 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.

The jet traveled at Mach 3.
Wiktionary

(law) Abbreviation of machine.

Wiktionary

(law) Abbreviation of machinery.

Wiktionary
Synonyms:
  • ernst mach
abbreviation
Machine.
Webster's New World
Machinery.
Webster's New World
Machinist.
Webster's New World
pronoun

Ernst Mach, Austrian physicist 1838 - 1916.

Wiktionary

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