a mounting with two axes, to allow movement in both horizontal and vertical planes, used with telescopes, antennas, and precise surveying instruments.
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Origin of altazimuth mounting
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for altazimuth mounting
a telescope mounting that allows motion of the telescope about a vertical axis (in azimuth) and a horizontal axis (in altitude)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012