From The Collaborative International Dictionary of English v.0.48 [gcide]:
Hypsometer \Hyp*som"e*ter\, noun [Gr. ? height + -meter.] (Physics) 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. Hypsometric
From WordNet (r) 3.0 (2006) [wn]:
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