: 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
Katelyn Umholtz, Kansas City Star, 10 June 2026
The lady inside was not very happy since the window was for her home office and she was seated at her desk when that Callaway went soaring through her window at Mach 5.
—Joe Kinsey Outkick, FOXNews.com, 9 June 2026
This is also not the first time the Mach 25 patch has been redesigned.
—Robert Pearlman, ArsTechnica, 8 June 2026
At Mach 4, a vehicle could theoretically travel across the continental United States in less than an hour, illustrating the significance of sustained high-speed flight.
—Prabhat Ranjan Mishra, Interesting Engineering, 7 June 2026
See All Example Sentences for mach
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Noun
Benjamin Stites, a partner with Mach 7B and a 7 Brew franchisee out of Overland Park, confirmed the new location.
—Katelyn Umholtz, Kansas City Star, 10 June 2026
The lady inside was not very happy since the window was for her home office and she was seated at her desk when that Callaway went soaring through her window at Mach 5.
—Joe Kinsey Outkick, FOXNews.com, 9 June 2026
This is also not the first time the Mach 25 patch has been redesigned.
—Robert Pearlman, ArsTechnica, 8 June 2026
At Mach 4, a vehicle could theoretically travel across the continental United States in less than an hour, illustrating the significance of sustained high-speed flight.
—Prabhat Ranjan Mishra, Interesting Engineering, 7 June 2026
See All Example Sentences for mach
Cite this Entry
“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 14 Jun. 2026.
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Mach
nounMedical Definition
Mach
noun
: a usually high speed expressed by a Mach number
an airplane flying at Mach 2
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