al·​tim·​e·​ter | \al-ˈti-mə-tər, ˈal-tə-ˌmē-tər \

Definition of altimeter 

: an instrument for measuring altitude especially : an aneroid barometer designed to register changes in atmospheric pressure accompanying changes in altitude

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Other Words from altimeter

altimetry \al-​ˈti-​mə-​trē \ noun

Examples of altimeter in a Sentence

Recent Examples on the Web

Like its predecessor, ICESat-2 is a laser altimeter that can very precisely map surface elevations. Scott K. Johnson, Ars Technica, "ICESat-2 successfully starts lasering Earth, telling us about it," 5 Oct. 2018 Instead of reacting to the weather, prepare for it with this waterproof watch that features a storm alarm, weather-predicting barometer, thermometer, altimeter, and compass. Janna Irons, Outside Online, "Essential Gear for Road-Trip Season," 23 Apr. 2018 The two-year survey used small Twin Otter planes, sensors detecting gravity and magnetism, as well as radar and laser altimeter tools. David Grossman, Popular Mechanics, "Three Giant Antarctic Valleys Found Hidden Under Ice," 25 May 2018 The estate originally encompassed about 24 acres, but was later expanded to its current size by Paul Kollsman, inventor of the altimeter, during his decades of ownership. Roger Vincent,, "Paul Allen puts a $150-million price on storied acreage in Beverly Crest," 11 July 2018 While the radar altimeter displays the height of the landing gear above the ground, things are happening too fast to use it in the flare. John Cox, USA TODAY, "Ask the Captain: It takes skill to make a smooth landing," 20 May 2018 Northwestern, the first team to proceed, unfortunately was disqualified after their altimeter failed and did not record the altitude. Scientific American, "The 2017 Alka-Rocket Challenge Wrap Up," 10 Nov. 2017 With a combination of high-resolution cameras, stereo images, altimeters, and spectrometers, Mars Express has revealed Mars in new and fascinating ways. Eric Berger, Ars Technica, "Mars Express has revealed the Red Planet in stunning new ways," 1 June 2018 Other hardware perks include Fitbit's standard optical heart-rate monitor, a tri-axis accelerometer and gyroscope, an altimeter, and storage for about 300 songs. Valentina Palladino, Ars Technica, "Fitbit Versa review: Slowly but surely pushing Fitbit past the “fit” bit," 26 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'altimeter.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of altimeter

1904, in the meaning defined above

History and Etymology for altimeter

Latin altus + English -meter

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Statistics for altimeter

Last Updated

23 Nov 2018

Look-up Popularity

Time Traveler for altimeter

The first known use of altimeter was in 1904

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More Definitions for altimeter



English Language Learners Definition of altimeter

: an instrument used for measuring the altitude of something (such as an airplane or a mountain)

More from Merriam-Webster on altimeter

Rhyming Dictionary: Words that rhyme with altimeter Encyclopedia article about altimeter

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living or existing for a long time

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