western hemisphere
/W EH1 S T ER0 N HH EH1 M IH0 S F IH0 R/noun
- 1
(US, metonymic) The Americas.
- 2
The hemisphere in Earth to the west of the Greenwich meridian (zero degree longitude) and east of 180 degrees longitude (approximately the International Date Line), containing the Americas and a small part of eastern Russia.
- 3
Used other than figuratively or idiomatically: see western, hemisphere.
- 4
(uncountable) Alternative form of Western Hemisphere. [The hemisphere in Earth to the west of the Greenwich meridian (zero degree longitude) and east of 180 degrees longitude (approximately the International Date Line), containing the Americas and a small part of eastern Russia.]
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