#geografie

• Abadan - A major city and port in southwestern Iran, located on the island of the same name in the Shatt al-Arab river delta. In occupational epidemiology, toxicology, and environmental medicine, the area is heavily studied globally due to the long-term impact of emissions from one of the world's largest oil refineries, analyzing the incidence of chronic respiratory conditions and oncological pathologies among petrochemical workers.
• Abakan - The capital city of the Republic of Khakassia, Russian Federation, located in southern Siberia at the confluence of the Abakan and Yenisei rivers. In medical geography and infectious diseases, the region is actively monitored for natural foci of tick-borne encephalitis (TBE) and other arboviruses specific to the taiga, serving as a base for studies on indigenous population immunity and vector dynamics.
• abhaz - A person belonging to the native population of Abkhazia or originating from there; as an adjective, it designates everything pertaining to this region or its culture. In 20th-century global gerontology and medical anthropology studies, the Abkhaz population became a major research subject due to an unusually high index of active longevity, with researchers analyzing the local diet, genetic factors, and rural lifestyle to understand the secrets of delayed cellular aging.
• Abisinia - The historical and traditional name under which the Ethiopian Empire and the Horn of Africa region were known in European cartographic, political, and diplomatic documents until the mid-20th century.