- australOf, relating to, or coming from the south.
- austral-Southern.
- australineA particular polyhydroxylated pyrrolizidine alkaloid.
- australoneA prenylflavonoid found in Morus australis.
- australopithecineAny of several extinct hominids, belonging to the genera Australopithecus and Paranthropus in the subtribe Australopithecina when seen as distinct, and sometimes other closely related genera.