Part of Earth comprising North and South America and the surrounding waters. Longitudes 20° W and 160° E are often considered its boundaries.
This entry comes from Encyclopædia Britannica Concise.For the full entry on Western Hemisphere, visit Britannica.com.
What made you look up Western Hemisphere? Please tell us what you were reading, watching or discussing that led you here.
Take our visual vocab quiz
A quick quiz about stuff worth knowing
The commonly misspelled words quiz
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes