Atoll, Atoll - Distribution and size, Atoll - Formation, Atoll - See Also, Atoll - Usage, Reef knoll - (the remains of an ancient atoll as a hill in a limestone area)
An atoll is a type of low, coral island found in tropical oceans and consisting of a coral-algal reef surrounding a central depression. The depression may be part of the emergent island, but more typically is a part of the sea (that is, a lagoon), or very rarely is an enclosed body of fresh, brackish, or highly saline water.
Atoll - Usage.
The word atoll comes from the Dhivehi (Indo-Aryan language of the Maldive Islands) word atholhu (Dhivehi: އަތޮޅު). Its first recorded use in English w ...
