Dictionary
Definition
-
- To save this word, you'll need to log in.
: 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
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Noun
Ukrainian officials said the missile that struck Dnipro reached Mach 11.
—David Faris, Newsweek, 29 Dec. 2024
Photo : Dassault Dassault Falcon 6X, $49.5 million Dassault’s new ultra-wide body Falcon 6X has a range of 5,500-nautical miles with a max cruising speed of Mach 0.90.
—Daniel Cote, Robb Report, 26 Dec. 2024
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
See all Example Sentences for mach
Word History
Etymology
Noun
Mach number
Phrases Containing mach
Dictionary Entries Near mach
Cite this Entry
“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 19 Jan. 2025.
Kids Definition
Mach
nounMedical Definition
Mach
noun
: a usually high speed expressed by a Mach number
an airplane flying at Mach 2
Biographical Definition
More from Merriam-Webster on mach
Nglish: Translation of mach for Spanish Speakers
Britannica English: Translation of mach for Arabic Speakers
Love words? Need even more definitions?
Merriam-Webster unabridged
Share