mach

or Mach

[ mahk ]

/ mɑk /

Save This Word!

See synonyms for mach on Thesaurus.com

noun

mach number.

QUIZ

QUIZ YOURSELF ON "WAS" VS. "WERE"!

Were you ready for a quiz on this topic? Well, here it is! See how well you can differentiate between the uses of "was" vs. "were" in this quiz.

Question 1 of 7

“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.

true

false

TAKE THE QUIZ TO FIND OUT

Origin of mach

After Ernst Mach

Other definitions for mach (2 of 3)

Mach

[ mahk; German mahkh ]

/ mɑk; German mɑx /

noun

Ernst

[ernst], /ɛrnst/, 1838–1916, Austrian physicist, psychologist, and philosopher.

Other definitions for mach (3 of 3)

mach.

abbreviation

machine.

machinery.

machinist.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use mach in a sentence

The jet is “redlined” at Mach 2, but structurally it can reach a maximum speed of Mach 2.25.
Exclusive Pictures of Stealth Jet Raid on Syria|Dave Majumdar|September 25, 2014|DAILY BEAST
Her songs range from mach-10 electro-pop, as on the track “SuperLove,” to a more punk-pop sound, a la Siouxsie Sioux or Blondie.
SXSW Breakout Musical Acts: London Grammar, Chance the Rapper, Jungle, and More|Marlow Stern|March 16, 2014|DAILY BEAST
But during that time in hell in Mach his beard turned pure white.
Freed Taliban Prisoners in Pakistan and Afghanistan Return to Jihad|Ron Moreau & Sami Yousafzai|December 6, 2013|DAILY BEAST
Slowing down in preparation for parachute deploy at Mach 1.7.
Curiosity’s Mars Landing Narrated Moment by Moment by Flight Director Keith Comeaux|Keith Comeaux|August 7, 2012|DAILY BEAST

L A composition of papier mach, with which Dr. Azoux has so beautifully represented anatomical subjects.
History of Embalming|J. N. Gannal
Meanwhile Mach came to my hotel and I spent four hours walking and supping with him at his club, an unforgettable conversation.
The Letters of William James, Vol. 1|William James
After making prodigious havock in many other places, Alfonzo returned to Columbo with mach spoil and many prisoners.
A General History and Collection of Voyages and Travels, Volume VI|Robert Kerr
Haeckel, Ostwald, and Mach have each given the world a constructive system of thought.
An Interpretation of Rudolf Eucken's Philosophy|W. Tudor Jones
For light, solid articles it is mixed and compressed very much as our papier-mach.
Appletons' Popular Science Monthly, January 1900|Various

British Dictionary definitions for mach (1 of 2)

Mach¹

/ (mæk) /

noun

short for Mach number

British Dictionary definitions for mach (2 of 2)

Mach²

/ (German max) /

noun

Ernst (ɛrnst). 1838–1916, Austrian physicist and philosopher. He devised the system of speed measurement using the Mach number. He also founded logical positivism, asserting that the validity of a scientific law is proved only after empirical testing

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for mach

Mach

[ mäk, mäKH ]

Ernst 1838-1916

Austrian physicist and philosopher who experimented with supersonic projectiles and the flow of gases, obtaining early photographs of shock waves and gas jets. His work laid an important foundation for later developments in the science of projectiles and aeronautical design, and the Mach number and Mach bands were named for him.