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transit instrument

noun

  1. Astronomy. meridian circle.
  2. Surveying. transit ( def 6 ).


transit instrument

noun

  1. an astronomical instrument, mounted on an E-W axis, in which the reticle of a telescope is always in the plane of the meridian. It is used to time the transit of a star, etc, across the meridian
“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


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Word History and Origins

Origin of transit instrument1

First recorded in 1805–15

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transit circletransition