hypsometern.
/hɪpˈsɒmɪtə/ An instrument for measuring altitudes, consisting essentially of a delicate thermometer, by which the boiling point of water is observed at particular elevations.
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the world > relative properties > measurement > measuring instrument > [noun] > for measuring altitude
hypsometer1864
thermobarometer1864
altimeter1904
altigraph1914
radio altimeter1927
absolute altimeter1930
barometric altimeter1930
1864 in Webster's Amer. Dict. Eng. Lang.
1879 Daily News 23 Aug. 6/4 Major Pinto recommended the hypsometer and aneroids for altitudes.
1884 C. S. Murray in Brit. Almanac Compan. 17 An instrument called the Hypsometer, whose business it is to determine the heights of mountains by means of the boiling-point of water.
This entry has not yet been fully updated (first published 1899; most recently modified version published online March 2018).
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n.1864- stoneelement
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