hypsomˈeter noun

An instrument for doing this by taking the boiling point of water

hypsometˈric adjective

hypsometry /hip-somˈə-tri/ noun

(Gr metron a measure) the art of measuring the heights of places on the earth's surface

hypˈsophobe noun

A person suffering from hypsophobia /hip-sō-fōˈbi-ə/ (Gr phobos fear) fear of (falling from) high places

hypsophyll /hipˈsō-fil/ noun (Gr phyllon leaf; botany)

A bract

hypsophyllˈary adjective