Oceania

noun3

1. •
   A continental region composed of the islands of the central and southern Pacific Ocean, principally divided into Melanesia, Micronesia and Polynesia.
2. •
   A continental region composed of the islands of the central and southern Pacific Ocean, principally divided into Melanesia, Micronesia and Polynesia.That region plus in some definitions Australia and the Malay Archipelago.
3. •
   That region plus in some definitions Australia and the Malay Archipelago.