altazimuth

noun

alt·​az·​i·​muth (ˌ)al-ˈtaz-məth 

-ˈta-zə-

often attributive

: a telescope mounted so that it can swing horizontally and vertically

also : any of several other similarly mounted instruments

Word History

Etymology

International Scientific Vocabulary altitude + azimuth

First Known Use

1851, in the meaning defined above