Guam

American  

[gwahm] / gwɑm /

noun

1. an island, belonging to the United States, in the northern Pacific, east of the Philippines: the largest of the Marianas group; U.S. naval station. 206 sq. mi. (535 sq. km). Agaña. GU (for use with zip code).

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Guam British  

/ ɡwɑːm /

noun

1. an island in the N Pacific, the largest and southernmost of the Marianas: belonged to Spain from the 17th century until 1898, when it was ceded to the US; site of naval and air force bases. Capital: Agana (now officially spelt Hagåtña). Pop: 160 378 (2013 est). Area: 541 sq km (209 sq miles)

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Guam Cultural  

1. A self-governing island territory of the United States, located in the western Pacific Ocean. With important naval and air bases, Guam is an American military bastion in the Pacific.

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Other Word Forms

Derived Forms

• Guamanian
  noun

Example Sentences

The attack on the base, as well as similar attacks in the Philippines and Guam, spurred the United States to declare war on Japan.

From Salon • Mar. 19, 2026

Guam and Puerto Rico, and about 370 dd’s Discounts stores in 23 states.

From Los Angeles Times • Mar. 10, 2026

“So having this geography to enhance what you have in Guam, to enhance what you have in Pearl Harbor…it’s going to make the U.S. Navy able to get back to it faster.”

From The Wall Street Journal • Feb. 8, 2026

The U.S. bases submarines in Guam, but China could hit the U.S. territory with a missile barrage early, possibly knocking out the island’s military facilities.

From The Wall Street Journal • Feb. 8, 2026

He’d flown into Guam eight times before, and in fact, he had specifically mentioned it in the briefing he gave before takeoff.

From "Outliers" by Malcolm Gladwell