Arcturus

== English == === Etymology === Borrowed from Latin Arctūrus. === Pronunciation === IPA(key): /ɑɹkˈtjʊəɹəs/ Rhymes: -ʊɹəs === Proper noun === Arcturus (astronomy) A bright yellow-orange star in the constellation Boötes; Alpha (α) Boötis. It is the fourth-brightest star in the night sky. ==== Derived terms ==== Arcturian ==== Translations ==== === See also === (Behenian fixed stars) Alcyone, Aldebaran, Algol, Algorab, Alkaid, Alphecca, Antares, Arcturus, Capella, Deneb Algedi, Procyon, Regulus, Sirius, Spica, Vega == Latin == === Etymology === Borrowed from Ancient Greek Ἀρκτοῦρος (Arktoûros), from ἄρκτος (árktos, “bear”) +‎ οὖρος (oûros, “guard”). === Pronunciation === (Classical Latin) IPA(key): [arkˈtuː.rʊs] (modern Italianate Ecclesiastical) IPA(key): [arkˈtuː.rus] === Proper noun === Arctūrus m (genitive Arctūrī); second declension the star Arcturus the constellation Boötes Synonym: Bootes ==== Declension ==== Second-declension noun. === See also === arctos == Portuguese == === Proper noun === Arcturus m alternative form of Arturo