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单词 almucantar
释义

WordReference Random House Unabridged Dictionary of American English © 2024
al•mu•can•tar  (al′myo̅o̅ kan′tər),USA pronunciation n. [Astron.]
  1. Astronomya circle on the celestial sphere parallel to the horizon;
    the locus of all points of a given altitude. Also called parallel of altitude. 
  • Medieval Latin
  • Middle French almicantarath
  • Arabic al-muqanṭarāt the almucantars, equivalent. to al the + muquanṭarāt sundial, derivative of qanṭarah arch; replacing almicanter, Middle English almicanteras (plural)
  • Medieval Latin almucantarath
  • probably 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::
almucantar, almacantar /ˌælməˈkæntə/ n
  1. a circle on the celestial sphere parallel to the horizontal plane
  2. an instrument for measuring altitudes
Etymology: 14th Century: from French, from Arabic almukantarāt sundial
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更新时间：2025/7/23 17:14:06