mach

1 of 2

abbreviation

Mach

2 of 2

noun

: 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
Noun
But this model, the Mach 5, doesn’t get enough love. Lauren Mazzo, Travel + Leisure, 3 Mar. 2024 As Trimble points out, that’s about 80 mph short of Mach 3. Eric Tegler, Forbes, 21 Feb. 2024 Assistant Director Dave Halls entered a no-contest plea to a misdemeanor charge of negligent use of a deadly weapon last Mach. Nancy Dillon, Rolling Stone, 21 Feb. 2024 The alliance says its speed has been put at Mach 8, or almost 9,900 kilometers per hour (6,138 mph). Brad Lendon, CNN, 13 Feb. 2024 Halle Bailey Halle Bailey donned a glitzy Mach and Mach number to the 2024 Recording Academy Honors presented by The Black Music Collective. Robyn Mowatt, Essence, 2 Feb. 2024 But scientists were astonished to find that when a bottle stored at 20 degrees Celsius (well above cellar temperature) was uncorked, the velocity of gas expelled from the bottleneck momentarily reached almost Mach 2—twice the speed of sound. Alice Lascelles, WIRED, 23 Dec. 2023 In a 2018 test, a Japanese Acquisition Technology and Logistics Agency railgun fired a projectile at a speed of Mach 6.5. Kelsey D. Atherton, Popular Science, 1 Nov. 2023 Ford has sold just under 36,000 Mach Es through November, only a 3.5% increase over the same period last year. Alexa St. John, Fortune, 7 Dec. 2023

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.

Word History

Etymology

Noun

Mach number

First Known Use

Noun

1947, in the meaning defined above

Time Traveler
The first known use of mach was in 1947

Dictionary Entries Near mach

Cite this Entry

“Mach.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mach. Accessed 19 Mar. 2024.

Kids Definition

Mach

noun

Medical Definition

Mach

noun
: a usually high speed expressed by a Mach number
an airplane flying at Mach 2

Biographical Definition

Mach

biographical name

ˈmäḵ How to pronounce Mach (audio)
ˈmäk
Ernst 1838–1916 Austrian physicist and philosopher

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