The crossword solutions for the term GUAM, E.G. ABBR. are USTERR (6 letters) and TERR (4 letters). Guam is an unincorporated and organized territory of the United States located in the western Pacific Ocean. It is the largest and southernmost of the Mariana Islands and the largest island in Micronesia. The abbreviation 'GUAM' is used to refer to the territory, and the acronym 'USTERR' stands for United States Territory of Guam. The abbreviation 'TERR' is also used to refer to the territory.