: a usually high speed expressed by a Mach number
an airplane flying at Mach 2
Examples of mach in a Sentence
Recent Examples on the Web
WWD, 23 Sep. 2024
One Mach is equal to the speed of sound, which is roughly 760 miles an hour at sea level.
—Johnny Dodd, Peoplemag, 21 Sep. 2024
Mustang Mach 1, 1932 Ford Roadster, 1955 Chevy Suburban Wagon, 1970 Chevy Nova and 1969 Chevy Camaro.
—Mylene Stolpe, The Mercury News, 11 Aug. 2024
The latest test flight reached transonic speeds of Mach 0.92 and an altitude of 50,000 ft (15,000 m), or 3 times and 5 times, respectively, better than before.
—New Atlas, 11 Aug. 2024
See all Example Sentences for mach 
Noun
Get ready for Valentine’s Day with Mach & Mach‘s Puffy Heart mules, sandals, and mary janes adorned with heart charms in lacquered red and silver.
—WWD, 23 Sep. 2024
One Mach is equal to the speed of sound, which is roughly 760 miles an hour at sea level.
—Johnny Dodd, Peoplemag, 21 Sep. 2024
Mustang Mach 1, 1932 Ford Roadster, 1955 Chevy Suburban Wagon, 1970 Chevy Nova and 1969 Chevy Camaro.
—Mylene Stolpe, The Mercury News, 11 Aug. 2024
The latest test flight reached transonic speeds of Mach 0.92 and an altitude of 50,000 ft (15,000 m), or 3 times and 5 times, respectively, better than before.
—New Atlas, 11 Aug. 2024
See all Example Sentences for mach
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Cite this Entry
“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 5 Oct. 2024.
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Mach
nounMedical Definition
Mach
noun
: a usually high speed expressed by a Mach number
an airplane flying at Mach 2
Biographical Definition
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