Teneriffe or Tenerife (both: tĕnˈərĭf, tĕnərēfˈ, Span. tānārēˈfā) [key], island (1990 pop. 770,627), 795 sq mi (2,059 sq km), in the Atlantic off NW Africa, the largest of the Canary Islands, Spain. A scenic island, it is dominated by Mt. Teide, a snowcapped volcanic peak (12,198 ft/3,718 m). Agriculture and tourism are the island's economic mainstays. Santa Cruz, capital of Santa Cruz de Tenerife prov., is on the island.