- one of the three principal divisions of Oceania, comprising those island groups in the Pacific Ocean lying east of Melanesia and Micronesia and extending from the Hawaiian Islands south to New Zealand.
- one of the three divisions of islands in the Pacific, the others being Melanesia and Micronesia: includes Samoa, Society, Marquesas, Mangareva, Tuamotu, Cook, and Tubuai Islands, and Tonga
