Antares Syllabification: (An·tar·es)Pronunciation: /anˈte(ə)rēz, -ˈtar-/Definition of Antares the brightest star in the constellation Scorpius. It is a binary star of which the main component is a red supergiant. Origin:Greek, literally 'simulating Mars (in color)'Antares in other Oxford dictionaries Definition of Antares in the British & World English dictionary