: 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
Thomas G. Moukawsher, Newsweek, 17 Dec. 2024
The missile launch struck a military command center in Ukraine, Putin claimed, saying the missile could reach speeds of Mach 10, or more than 7,000 mph.
IRBMs can reach targets up to 3,500 miles away.
—Brad Dress, The Hill, 11 Dec. 2024
Brandenburg completed the eighth and most recent flight of the XB-1 on Nov. 16, reaching an altitude of 25,000 feet and a speed of Mach 0.82.
—J. George Gorant, Robb Report, 5 Dec. 2024
Shop these Hoka Women's Mach 6 sneakers for $112 or the Hoka Men's Clifton 9 for $116.
—Amelia McBride, Travel + Leisure, 2 Dec. 2024
See all Example Sentences for mach 
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Noun
The Pentagon said on Thursday that a common hypersonic All Up Round (AUR) missile, which can fly at Mach 17—equal to 12,940 miles per hour or 17 times the speed of sound, was fired from a U.S. Army's launcher at Cape Canaveral Space Force Station in Florida.
—Thomas G. Moukawsher, Newsweek, 17 Dec. 2024
The missile launch struck a military command center in Ukraine, Putin claimed, saying the missile could reach speeds of Mach 10, or more than 7,000 mph.
IRBMs can reach targets up to 3,500 miles away.
—Brad Dress, The Hill, 11 Dec. 2024
Brandenburg completed the eighth and most recent flight of the XB-1 on Nov. 16, reaching an altitude of 25,000 feet and a speed of Mach 0.82.
—J. George Gorant, Robb Report, 5 Dec. 2024
Shop these Hoka Women's Mach 6 sneakers for $112 or the Hoka Men's Clifton 9 for $116.
—Amelia McBride, Travel + Leisure, 2 Dec. 2024
See all Example Sentences for mach
Dictionary Entries Near mach
Cite this Entry
“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 30 Dec. 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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