al·​tim·​e·​ter | \ al-ˈti-mə-tər How to pronounce altimeter (audio) , ˈal-tə-ˌmē-tər How to pronounce altimeter (audio) \

Definition of altimeter

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

Other Words from altimeter

altimetry \ al-​ˈti-​mə-​trē How to pronounce altimeter (audio) \ noun

Examples of altimeter in a Sentence

Recent Examples on the Web Stephen Lee had quietly kept the altimeter for 67 years. Diane Bellcolumnist, San Diego Union-Tribune, 10 May 2022 While some altimeters are more susceptible than others, no current altimeter and antenna is fully compliant with the new 5G environment that will be in place in January, much less 6 months later when power levels will be raised. Diana Furchtgott-roth, Forbes, 23 Dec. 2021 The new, more powerful 5G radio signals turned on last week at cell towers around the country can potentially interfere with an instrument called an altimeter that’s used to precisely measure how high a plane is above the ground. Dominic Gates, Anchorage Daily News, 25 Jan. 2022 Garmin has removed the barometric altimeter from the Vivosmart line. Andrew Williams, Forbes, 21 Apr. 2022 But Sprague said that the specific Honeywell altimeter on the E175 jet required airport-specific limitations. Dominic Gates, Anchorage Daily News, 25 Jan. 2022 On the 787, the altimeter reading is used to determine the timing and power of the automatic braking systems upon landing. Dominic Gates, Anchorage Daily News, 20 Jan. 2022 That report said the need for receiver regulation was illustrated by the then-recent LightSquared/GPS controversy, which involved a much smaller guard band than the 220 MHz or 400 MHz ones in the 5G/altimeter dispute. Jon Brodkin, Ars Technica, 3 Mar. 2022 In terms of hardware, the Fenix 7 has a heart rate monitor, pulse oximeter, thermometer, altimeter, and GPS, now with the L5 frequency range. Corey Gaskin, Ars Technica, 19 Jan. 2022 See More

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.

First Known Use of altimeter

1904, in the meaning defined above

History and Etymology for altimeter

borrowed from New Latin, from Latin altus "high" + -i- -i- + New Latin -meter -meter — more at altitude

Note: The word altimeter appears in the word lists of early Latin-English dictionaries, as the 1572 edition of Richard Huloet's dictionary and the 1578 edition of Thomas Cooper's Thesaurus Linguae Romanae et Britannicae (defined as "an instrument wherwith high things are mette"). These entries all appear to derive from versions of Papias' Latin dictionary Elementarium doctrinae rudimentum, composed in the 11th century, but reedited and expanded many times; the 1485 Venice edition enters "altimeter quo metiuntur altitudines - quoddam instrumentum est" ("altimeter by which heights are measured; it is a certain instrument"). Cf. New Latin scala altimetra, with vernacular equivalents, as Middle French eschelle altimetre, applied to the graduated scale of various instruments for measuring angular distance above the horizon. As a word used in the early 20th century for instruments employing barometric pressure to measure altitude, the word may be a recoinage from Latin altus and -meter.

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The first known use of altimeter was in 1904

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Last Updated

28 Jun 2022

Cite this Entry

“Altimeter.” Dictionary, Merriam-Webster, Accessed 11 Aug. 2022.

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