: 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
ArsTechnica, 8 May 2026
The setback resolved, the comfortable, five-passenger Blazer EV joined the Hyundai Ioniq 5, Ford Mustang Mach-E and Tesla Model Y in the popular segment.
—James Raia, Mercury News, 4 May 2026
That’s seven times the speed of sound, or Mach 7.
—Chris Young, Interesting Engineering, 1 May 2026
This vehicle can reach the edge of space, traveling at speeds above Mach 3.5 and climbing to altitudes of about 62 miles.
—Kurt Knutsson, FOXNews.com, 28 Apr. 2026
See All Example Sentences for mach
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
But engineers were careful to design Ingenuity not to spin its carbon-fiber rotors faster than the speed of sound out of concern that exceeding Mach 1 (roughly 540 mph on Mars) might cause the blades to shatter.
—ArsTechnica, 8 May 2026
The setback resolved, the comfortable, five-passenger Blazer EV joined the Hyundai Ioniq 5, Ford Mustang Mach-E and Tesla Model Y in the popular segment.
—James Raia, Mercury News, 4 May 2026
That’s seven times the speed of sound, or Mach 7.
—Chris Young, Interesting Engineering, 1 May 2026
This vehicle can reach the edge of space, traveling at speeds above Mach 3.5 and climbing to altitudes of about 62 miles.
—Kurt Knutsson, FOXNews.com, 28 Apr. 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 11 May. 2026.
Copy CitationKids Definition
Mach
nounMedical Definition
Mach
noun
: a usually high speed expressed by a Mach number
an airplane flying at Mach 2
Love words? Need even more definitions?
Merriam-Webster unabridged
