Atoll - See Also: Encyclopedia - AtollAn 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 ...
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