noun, plural al·ti·pla·nos for 2.
- a plateau region in South America, situated in the Andes of Argentina, Bolivia, and Peru.
- (lowercase) Geology. an elevated terrace or plateau sculptured by periglacial geomorphic processes.
- a plateau of the Andes, covering two thirds of Bolivia and extending into S Peru: contains Lake Titicaca. Height: 3000 m (10 000 ft) to 3900 m (13 000 ft)
- A high mountain plateau. The most well-known altiplano extends from Lake Titicaca, in southern Peru, to Lake Poopo in Bolivia, covering a distance of 966 km (600 mi). Its average altitude is 3,658 m (12,000 ft).