Mach definition
Mach number.
noun
Machine.
abbreviation
Machinery.
abbreviation
Machinist.
abbreviation
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(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.
noun
(physics) The Mach number.
noun
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