(Abbr. GU)
An unincorporated territory of the United States, the largest and most southerly of the Mariana Islands in the western Pacific Ocean. Discovered by Magellan in 1521, the island was ceded by Spain to the United States in 1898. Agana is the capital. Population: 173,000.
Guamanian Gua·ma'ni·an (gwä-mā'nē-ən) adj. & n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.
