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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.

Beyond supersonic travel lies hypersonic travel, which involves flying at Mach 5 or above and comes with intense thermal challenges that have yet to be resolved.

From The Wall Street Journal • May 15, 2026

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

From Los Angeles Times • Apr. 7, 2026

Mach, which makes autonomous drone technology, hasn’t achieved unicorn status yet, and is valued at about $500 million.

From Barron's • Mar. 31, 2026

These waves reached speeds of up to Mach 5.6.

From Science Daily • Feb. 8, 2026

Another involved turning the tunnel’s Mach 2 winds on a series of sharp-nosed metal cones to discover the point at which the smooth air flowing over the cones became turbulent.

From "Hidden Figures" by Margot Lee Shetterly




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