alˈtim ə]d.ə(r), ˈalt əˌmē]d.ə(r), ]t ə-\ noun
( -s )
Etymology: alti- + -meter
: an instrument for measuring height (as above sea level or ground level) usually in the form of an aneroid barometer designed to register changes in atmospheric pressure accompanying changes in altitude and calibrated in feet, yards, or meters