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Alexandria, city, Egypt

(Encyclopedia)Alexandria, Arabic Al Iskandariyah, city, N Egypt, on the Mediterranean Sea. It is at the western extremity of the Nile River delta, situated on a narrow isthmus between the sea and Lake ...

South Sudan

(Encyclopedia)South Sudan so͞odănˈ [key], officially Republic of South Sudan, republic (2015 est. pop. 11,882,000), 248,777 sq mi (644,329 sq km), E Africa. South Sudan is bordered by Sudan (N), Ethiopia (E), Ke...

Freemasonry

(Encyclopedia)Freemasonry, teachings and practices of the secret fraternal order officially known as the Free and Accepted Masons, or Ancient Free and Accepted Masons. Because of its identification with 19th-cent...

medicine

(Encyclopedia)medicine, the science and art of treating and preventing disease. Modern medicine, characterized by growing specialization and a complex diagnostic and therapeutic technology, faces problems in the...

periodic table

(Encyclopedia)CE5 periodic table, chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arrange...

Mauritania

(Encyclopedia)CE5 Mauritania môrĭtāˈnēə [key], officially Islamic Republic of Mauritania, republic (2015 est. pop. 4,182,000), 397,953 sq mi (1,030,700 sq km), NW Africa. It borders on the Atlantic Ocean i...

Chad

(Encyclopedia)CE5 Chad chăd, chäd [key], officially Republic of Chad, republic (2020 est. pop. 16,425,864), ...

Djibouti, country, Africa

(Encyclopedia)CE5 Djibouti jēbo͞otēˈ [key], officially Republic of Djibouti, republic (2015 est. pop. 828,000), c.8,900 sq mi (23,057 sq km), E Africa, on the Gulf of Aden. It is bounded by Eritrea (N), Ethi...

Damascus

(Encyclopedia)Damascus dəmăsˈkəs [key], Arabic Dimashq or ash-Sham, city (1995 est. pop. 1,500,000), capital of Syria and of its Damascus governorate, SW Syria, on the eastern edge of the Anti-Lebanon Mts. It i...

map

(Encyclopedia)map, conventionalized representation of spatial phenomena on a plane surface. Unlike photographs, maps are selective and may be prepared to show various quantitative and qualitative facts, including b...