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almucantar

[al-myoo-kan-ter]
noun Astronomy.
  1. a circle on the celestial sphere parallel to the horizon; the locus of all points of a given altitude.
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Origin of almucantar

1350–1400; probably < Medieval Latin almucantarath < Arabic al-muqanṭarāt the almucantars, equivalent to al the + muquanṭarāt sundial, derivative of qanṭarah arch; replacing almicanter, Middle English almicanteras (plural) < Middle French almicantarath < Medieval Latin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for almucantar

almucantar

almacantar

noun
  1. a circle on the celestial sphere parallel to the horizontal plane
  2. an instrument for measuring altitudes
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Word Origin

C14: from French, from Arabic almukantarāt sundial
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