IntroductionMacao (məkouˈ) [key], Port. Macau, Mandarin Aomen, special administrative region of China, formerly administered by Portugal (2005 est. pop. 449,000), 6.5 sq mi (16.9 sq km), adjoining Guangdong prov., SE China, on the estuary of the Pearl River, 40 mi (64 km) W of Hong Kong and 65 mi (105 km) S of Guangzhou (Canton).
See more Encyclopedia articles on: Chinese and Mongolian Political Geography