: 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
Victoria Gomelsky, Robb Report, 3 Oct. 2024
Currently, hypersonic systems are mainly based on glide bodies that are boosted to high speed and altitude by rockets and then accelerate to over Mach 5 by gliding back to lower altitudes.
—New Atlas, 3 Oct. 2024
Hypersonic weapons are widely feared for their speed — at least Mach 5, traveling miles in seconds — and maneuverability.
—Colin Demarest, Axios, 2 Oct. 2024
And while the specter of Mach’s Haitian ancestry is never far from reach, Pray for Haiti also plays like his witty facsimile of a rap star.
—Pitchfork, 1 Oct. 2024
See all Example Sentences for mach 
Noun
But like many offspring, the EMC SR-71 has its own origin tale, this one involving a legendary spy plane built to withstand Mach 3 speeds and clandestine operations.
—Victoria Gomelsky, Robb Report, 3 Oct. 2024
Currently, hypersonic systems are mainly based on glide bodies that are boosted to high speed and altitude by rockets and then accelerate to over Mach 5 by gliding back to lower altitudes.
—New Atlas, 3 Oct. 2024
Hypersonic weapons are widely feared for their speed — at least Mach 5, traveling miles in seconds — and maneuverability.
—Colin Demarest, Axios, 2 Oct. 2024
And while the specter of Mach’s Haitian ancestry is never far from reach, Pray for Haiti also plays like his witty facsimile of a rap star.
—Pitchfork, 1 Oct. 2024
See all Example Sentences for mach
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mach.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near mach
Cite this Entry
“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 15 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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