western hemisphere

noun

variants or Western Hemisphere

: the half of the earth comprising North and South America and surrounding waters

Examples of western hemisphere in a Sentence

Recent Examples on the Web

Arsia Mons is the southernmost volcano in a trio called the Tharsis Montes, or the Tharsis mountains, which are located in Mars' western hemisphere near its equator. —Kenna Hughes-Castleberry, Space.com, 9 June 2025

East Greenland is dominated by towering mountains, vast valleys, and is home to the most isolated town in the western hemisphere, Ittoqqortoormiit, where wild animals roam and nature is at its purest. —Dobrina Zhekova, Vogue, 4 Mar. 2025

The Limits of Trump’s Hardball Diplomacy Why the western hemisphere is turning away from America and toward China. —Antony J. Blinken, Foreign Affairs, 6 May 2025

Since 1962, El Morro and nearby Castillo San Cristóbal (the largest fort constructed by the Spanish in the western hemisphere) have been part of the San Juan National Historic Site. —Cnn.com Wire Service, Mercury News, 10 June 2025

Word History

First Known Use

1646, in the meaning defined above

Rhymes for western hemisphere

• acyclovir
• asthenosphere
• ganciclovir
• magnetosphere
• atmosphere
• biosphere
• centromere
• chemosphere
• chromosphere
• hydrosphere
• lithosphere
• mesosphere

Kids Definition

western hemisphere

noun

often capitalized W&H

: the half of the earth including North America, South America, and surrounding waters