cathetometer

noun

cath·e·tom·e·ter

ˌkathəˈtämətə(r)

plural -s

: an instrument for accurate measurement of small differences in height (as of columns of mercury or other fluids) consisting of a telescopic leveling apparatus that slides up or down a perpendicular standard with a finely graduated scale

cathetometric

¦kathətə¦me‧trik

adjective

Word History

Etymology

International Scientific Vocabulary catheto- (from Greek kathetos vertical height, perpendicular line, from kathetos let down, from kathienai) + -meter