Rigil Kentaurus Syllabification: (Ri·gil Ken·tau·rus)Pronunciation: /ˈrījəl kenˈtôrəs/ (also Rigil Kent) AstronomyDefinition of Rigil Kentaurus the star Alpha Centauri. Origin:Arabic, literally 'the foot of the Centaur'Rigil Kentaurus in other Oxford dictionaries Definition of Rigil Kentaurus in the British & World English dictionary