Antlia Syllabification: (Ant·li·a)Pronunciation: /ˈantlēə/ AstronomyDefinition of Antlia a small and faint southern constellation (the Air Pump), between Hydra and Vela. (as genitive Antliae /ˈantlēˌē/) used with a preceding letter or numeral to designate stars in the constellation:the star Alpha AntliaeOrigin:Latin, from GreekAntlia in other Oxford dictionaries Definition of Antlia in the British & World English dictionary