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altimeter

[al-tim-i-ter, al-tuh-mee-ter] /ælˈtɪm ɪ tər, ˈæl təˌmi tər/
noun
1.
a sensitive aneroid barometer that is graduated and calibrated, used chiefly in aircraft for finding distance above sea level, terrain, or some other reference point by a comparison of air pressures.
2.
any device used for the same purpose that operates by some other means, as by radio waves.
Origin
1820-1830
1820-30; alti- + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for altimeter
  • The autopilot was working, however, but the problem was in a radio altimeter.
  • Another kind of barometric reading is the altimeter setting, which aircraft use.
  • Text explains differences between station pressure, sea level pressure and altimeter setting.
  • One of the calculations you can perform on it is correcting station pressure for the altimeter setting.
British Dictionary definitions for altimeter

altimeter

/ælˈtɪmɪtə; ˈæltɪˌmiːtə/
noun
1.
an instrument that indicates height above sea level, esp one based on an aneroid barometer and fitted to an aircraft
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
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Word Origin and History for altimeter
n.

1918, from Modern Latin altimeter, from alti- "high" (from Latin altus; see old) + -meter.

Online Etymology Dictionary, © 2010 Douglas Harper
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altimeter in Science
altimeter
  (āl-tĭm'ĭ-tər)   
An instrument that measures and indicates the height above sea level at which an object, such as an airplane, is located.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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