Mach number

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Mach number

also mach number  (mäk)
n. Abbr. M
The ratio of the speed of an object to the speed of sound in the surrounding medium. For example, an aircraft moving twice as fast as the speed of sound is said to be traveling at Mach 2.

[After Ernst Mach.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Mach number

n
(Units) (often not capital) the ratio of the speed of a body in a particular medium to the speed of sound in that medium. Mach number 1 corresponds to the speed of sound. Often shortened to: Mach
[C19: named after Ernst Mach]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

mach

or Mach

(mɑk)

n.
a number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving. Abbr.: M
[after E. Mach]

Mach

(mɑk, mɑx)

n.
Ernst, 1838–1916, Austrian physicist.

mach.

1. machine.
2. machinery.
3. machinist.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Mach number

(mäk)
The ratio of the speed of a body to the speed of sound in a particular medium. For example, an aircraft flying through air at twice the speed of sound has a Mach number of 2.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

mach number

The ratio of the velocity of a body to that of sound in the surrounding medium.
Dictionary of Military and Associated Terms. US Department of Defense 2005.

mach number

A unit of velocity. Mach 1 is the speed of sound; Mach 5 is described as hypersonic.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.mach number - the ratio of the speed of a moving body to the speed of soundMach number - the ratio of the speed of a moving body to the speed of sound
ratio - the relative magnitudes of two quantities (usually expressed as a quotient)
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
Machovo číslo
References in periodicals archive ?
The indicated airspeed for a given Mach number gets higher as you descend, so the idea is to descend maintaining your desired Mach speed until you reach 280 knots, then simply maintain 280 knots.
"As a company, we took on a lot of initiatives, going mach speed ahead.
Another innovative approach used at the law school is Mach Speed Mock Interviews.
In only the aircraftas third flight, the Latitude prototype has successfully achieved full envelope performance for maximum speed (440 KTAS, 506 mph), Mach speed (0.80) and altitude (45,000 ft).
Genetic studies are advancing at mach speed and as part of that advance an Iranian-American scientist has now discovered how genetic differences make some people susceptible to cholera and others resistant to it.
I have served in the Air Force for almost 20 years with skills using the more sophisticated and more modern Mirages 5 and 3 with 2.2 Mach speed. I used to fly in and out of this airport," he adds.