noun, Pathology. 1. the accumulation of excessive ketones in the body, as in diabetic acidosis. Origin of ketosis. 1915-1920.
Climate zones of Africa, showing the ecological break between the hot desert climate of the Sahara Desert (red), the hot semi-arid climate of the Sahel (orange) and the tropical climate of Central and Western Africa (blue).
North Africa is further divided into two smaller regions: Maghreb and the Sahara. The Maghreb region makes up northwestern Africa along the Atlas Mountains, including Western Sahara, Morocco, Algeria, Tunisia, and Libya. The countries in the Sahara region are Egypt, Sudan, and South Sudan.