Altazimuth

[æl'tæzimәθ]

(noun.) an instrument that measures the altitude and azimuth of celestial bodies; used in navigation.

Checker: Thelma--From WordNet

(n.) An instrument for taking azimuths and altitudes simultaneously.

Typed by Alice

n. an instrument devised by Sir G. B. Airy for determining the apparent places of the heavenly bodies on the celestial sphere.

Typist: Waldo