HYPSOMETER
hypsometer
(noun) an altimeter that uses the boiling point of water to determine land elevation
Source: WordNet® 3.1
Etymology
Noun
hypsometer (plural hypsometers)
An instrument that measures altitude indirectly by measuring the boiling point of water (which varies with atmospheric pressure).
Anagrams
• phytomeres
Source: Wiktionary
Hyp*som"e*ter, n. Etym: [Gr. -meter.] (Physics)
Definition: An instrument for measuring heights by observation of
barometric pressure; esp., one for determining heights by
ascertaining the boiling point of water. It consists of a vessel for
water, with a lamp for heating it, and an inclosed thermometer for
showing the temperature of ebullition.
Source: Webster’s Unabridged Dictionary 1913 Edition