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altazimuth

[al-taz-uh-muh th]
noun Astronomy.
  1. an instrument for determining both the altitude and the azimuth of a heavenly body.
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Origin of altazimuth

First recorded in 1855–60; alt(itude) + azimuth
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for altazimuth

Historical Examples

  • We saw that the altazimuth employed at Upsala had no lenses.

    Scientific American Supplement, No. 611, September 17, 1887

    Various

  • The altazimuth can thus determine the altitude and azimuth of objects, hence the name.

  • On his return home he settled at Westbury, where he erected an altazimuth by Troughton, with a two-and-a-half-foot circle.

    The Royal Observatory Greenwich

    E. Walter (Edwared Walter) Maunder

  • This pillar is the support of Airy's altazimuth, and very nearly marks the place where Flamsteed set up his original sextant.

    The Royal Observatory Greenwich

    E. Walter (Edwared Walter) Maunder

  • For many years the instruments in regular use were two only, the transit circle and the altazimuth.

    The Royal Observatory Greenwich

    E. Walter (Edwared Walter) Maunder


British Dictionary definitions for altazimuth

altazimuth

noun
  1. an instrument for measuring the altitude and azimuth of a celestial body by the horizontal and vertical rotation of a telescope
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Word Origin

C19: from alt (itude) + azimuth
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