almucantar

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almucantar

(ˌælməˈkæntə) or

almacantar

n
1. (Astronomy) a circle on the celestial sphere parallel to the horizontal plane
2. an instrument for measuring altitudes
[C14: from French, from Arabic almukantarāt sundial]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

almucantar

A circle on the celestial sphere that is parallel to the horizontal plane.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited