Hypsometer
Pronunciation : Hyp*som"e*ter
Part of Speech : n.
Etymology : [Gr. -meter.] (Physics)
Definition : Defn: 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