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altimeter

noun

al·​tim·​e·​ter al-ˈti-mə-tər How to pronounce altimeter (audio) ˈal-tə-ˌmē-tər How to pronounce altimeter (audio)
: an instrument for measuring altitude
especially : an aneroid barometer designed to register changes in atmospheric pressure accompanying changes in altitude
altimetry noun

Example Sentences

Recent Examples on the Web The plane lacked its wind gauge and altimeter, which were lost during shipping. David Reamer, Anchorage Daily News, 14 Aug. 2022 The route is not entirely marked and must be navigated by an altimeter, compass, and GPS. Brian Metzler, Outside Online, 24 Aug. 2022 The authenticity of the altimeter was subsequently verified, confirms Luis Gaxiola, a Mexican aviation history buff and honorary member of the American Legion Post 11. Diane Bellcolumnist, San Diego Union-Tribune, 10 May 2022 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 See More

Word History

Etymology

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.

First Known Use

1904, in the meaning defined above

Time Traveler
The first known use of altimeter was in 1904

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