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单词 arcturus
释义

WordReference Random House Unabridged Dictionary of American English © 2024
Arc•tu•rus  (ärk tŏŏr′əs, -tyŏŏr′-),USA pronunciation n. [Astron.]
  1. Astronomya first-magnitude star in the constellation Boötes.
  • Middle French
  • Greek Arktoûros, equivalent. to árkt(os) bear + -oûros keeper; replacing Middle English arture
  • Latin
  • 1352–75
Arc•tu′ri•an, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
Arcturus /ɑːkˈtjʊərəs/ n
  1. the brightest star in the constellation Boötes: a red giant. Visual magnitude: –0.4; spectral type: K2III; distance: 37 light years
Etymology: 14th Century: from Latin, from Greek Arktouros, from arktos bear + ouros guard, keeper
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更新时间：2025/2/22 16:36:51