#South America
- Alonsoa — A genus of perennial herbaceous or shrubby plants, native to the mountainous regions of Central and South America (especially the Andes), belonging to the Scrophulariaceae family. These plants are frequently cultivated in horticulture as annual ornamental flowers due to their spectacular asymmetric, bright red-orange inflorescences, popularly known as 'mask flowers'.
- Alonsoa incisifolia — The scientific Latin designation for a herbaceous plant species within the Alonsoa genus, Scrophulariaceae family, native to the mountainous regions of South America (specifically Chile). This ornamental plant stands out structurally due to its deeply toothed or incised leaves with sharp margins and its spectacular scarlet or reddish-orange inflorescences, frequently cultivated in greenhouses or decorative gardens.
- Alstroemeria pelegrina — The scientific Latin designation for the pink Peruvian lily, a perennial herbaceous plant species in the Alstroemeriaceae family, native to the coastal regions of Chile and Peru. This species is highly valued structurally in landscape design due to its large, open-faced flowers featuring pale lilac-pink or pinkish-white petals, decorated centrally with intense purple splotches and a bright yellow zone, representing the type species of the entire Alstroemeria genus.
- Amapá — A federal state located in the northern region of Brazil at the mouth of the Amazon River, bordered by French Guiana, Suriname, and the state of Pará. With its capital in Macapá, the region is globally famous for its rich Amazonian biodiversity and dense protected rainforests.
- Amasonia calycina — The official botanical Latin taxonomic designation for a subshrub species in the Lamiaceae family, native to tropical South America. Structurally, the species is remarkable for its spectacular terminal inflorescences composed of a bright red central axis, large persistent scarlet bracts, and contrasting tubular yellow-cream flowers.
- Amazon — The largest river in the world by water volume and drainage basin, located in South America. In a modern commercial sense, it refers to one of the world's largest multinational technology and e-commerce companies, founded by Jeff Bezos.
- Amazonas — The largest federal state in Brazil by area, located in the northern region of the country, with its capital in Manaus. Its territory is almost entirely covered by the Amazon rainforest; the name is also shared by an administrative region in Venezuela, Colombia, and Peru.
- Amazonian — Pertaining to the Amazon River region or the Amazon rainforest; specific to the vast South American ecosystem characterized by extreme humidity and rich biodiversity. Culturally, it defines indigenous communities or geographic features of the Amazon basin.
- Ambato — An important city and administrative center located in the central mountainous region (Andean Cordillera) of Ecuador, and the capital of the Tungurahua Province. It is globally known as the 'City of Flowers and Fruits' due to its remarkable agricultural production and its famous festival, serving as a major regional economic and industrial hub.
- Anapolis — A major city and important economic center located in the state of Goiás in the central-western region of Brazil, strategically positioned between the federal capital Brasília and the state capital Goiânia. Founded at the end of the 19th century, the city evolved into a premier logistic and industrial hub of the country, particularly recognized for its massive pharmaceutical cluster, modern agroindustrial district, strategic military airbase, and rail and road infrastructure connecting internal agricultural regions to major ports.
- Andean — A linguistic variant or rare form historically used as a synonym for the term 'andin' (Andean); belonging to the Andes Mountains of South America, relating to this mountain region, or to the pre-Columbian civilizations that developed within its structural perimeter. As a proper noun, it may also designate a local toponym or a minor historically recorded settlement.
- Andean — Belonging to the Andes mountain range of South America, relating to this massive mountain region, its fauna, flora, or to the pre-Columbian populations and civilizations (such as the Inca Empire) that developed within its structural perimeter. In an ecological and geographical context, it defines the specific characteristics of high-altitude habitats across the states traversed by this cordillera.
- Antofagasta — A major port city and municipality in northern Chile, located on the Pacific Ocean coast and serving as the capital of the homonymous region. Structurally situated at the edge of the Atacama Desert, this urban center is a fundamental economic pillar of the country, historically and globally recognized for its massive export of minerals (especially copper and saltpeter) and for its precision industrial and port infrastructure.
- Andes — The Romanian designation for the Andean Cordillera, the longest continental mountain range in the world, located along the west coast of South America; a massive mountain system traversing seven states, characterized by high volcanic peaks, vast plateaus, and a crucial role in defining continental climate and biodiversity.
- Anzoategui — A federal state located in the northeastern region of Venezuela, named in honor of the national independence hero, José Antonio Anzoátegui; a region of crucial economic importance due to the massive oil reserves within the Orinoco Basin, with its capital in the city of Barcelona and an extensive coastline on the Caribbean Sea.
- Apa — The name of a border river located in South America, which originates in the Amambay massif in Brazil and flows westward, forming an extensive natural border between Brazilian and Paraguayan territories until its confluence with the Paraguay River. This watercourse plays a crucial ecological and geopolitical role in the region.
- Apure — A major river in southwestern Venezuela, a left tributary of the Orinoco River, flowing over eight hundred kilometers and navigable for large sections; it also represents the name of a federal state located in the plains region (Los Llanos), a structural zone renowned for cattle ranching, rich biodiversity, and massive seasonal flooding.
- Apurimac — A major river in Peru that constitutes the most distant source of the Amazon River, originating in the alpine mountains of the Arequipa region; it also represents the name of a Peruvian administrative department located in the south of the country, characterized by a mountainous structural relief, deep canyons, and a strong indigenous Quechua cultural heritage.
- Aracaju — A coastal city and the capital of the state of Sergipe, located in the northeastern region of Brazil, at the mouth of the Sergipe River into the Atlantic Ocean. It is recognized as one of Brazil's first urban-planned cities, featuring a distinctive chessboard street grid, and serves as an important economic, academic, and tourism hub, famous for its beaches and the Atalaia boardwalk.
- Aragua — A federal state located in the north-central region of Venezuela, bordering the Caribbean Sea, renowned for its varied topography combining fertile plains, coastal mountain ranges, and the Henri Pittier National Park (the oldest national park in the country). It serves as a major industrial, military, and agricultural hub of Venezuela, with its capital at Maracay and significant geopolitical importance due to its population density and strategic proximity to the Caracas metropolitan zone.