altazimuth [
æl'tæzimәθ]
n. 地平经纬仪
altazimuth[ noun ]
an instrument that measures the altitude and azimuth of celestial bodies; used in navigation
<noun.artifact>
Altazimuth \Alt*az"i*muth\, n. [Alltude + azimuth.] (Astron.)
An instrument for taking azimuths and altitudes
simultaneously.