- large island in the East Indies, north of Australia: divided between West Irian (in Indonesia) and Papua New Guinea: c. 330,000 sq mi (854,697 sq km)Indonesian name Irian
- former Australian trust territory including NE New Guinea, the Bismarck Archipelago, Bougainville, & smaller adjacent islands of the Solomons
Used by arrangement with John Wiley & Sons, Inc.
- New Guinean adjective & n.
, Trust Territory of