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Definitions

Mach

[mahk] / mɑk /
NOUN
Mach number
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The deal reflects changing defense sector dynamics, with startups like Mach gaining resources amid increased venture-capital investment.

From The Wall Street Journal • May 19, 2026

Drone startup Mach Industries acquired rocket-maker Exquadrum for $50 million in cash and equity in April.

From The Wall Street Journal • May 19, 2026

The fourth Quarterhorse will be built in El Segundo — with the goal of hitting Mach 3.

From Los Angeles Times • Apr. 7, 2026

The company’s goal is to eventually develop a hypersonic plane reaching Mach 5, or five times the speed of sound, and Southern California has the engineering talent base to help achieve that, executives said.

From Los Angeles Times • Apr. 7, 2026

Jackie was one of the only American women to fly military jets and had even been the first woman to break the sound barrier—flying faster than the speed known as Mach 1—in 1953.

From "Women in Space" by Karen Bush Gibson




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