Oceania
From the English word ocean for 'a large body of water'. It is ultimately derived from Greek Ωκεανός (Okeanos), the great river or sea surrounding the disk of the Earth. Personified, in Greek Mythology, as Oceanus, son of Uranus and Gaia and husband of Tethys.
The Danish geographer Conrad Malte-Brun introduced the term 'Oceania' for the islands of the Pacific Ocean in the 19th century. Later Australia, New Guinea and New Zealand were added.
Read more about this topic: List Of Continent Name Etymologies