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atoll
(redirected from Coral atoll)

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
atoll: see coral reefs coral reefs, limestone formations produced by living organisms, found in shallow, tropical marine waters. In most reefs, the predominant organisms are stony corals, colonial cnidarians that secrete an exoskeleton of calcium carbonate (limestone).
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atoll

Coral reef enclosing a lagoon. Atolls consist of ribbons of reef that may not be circular but that are closed shapes, sometimes miles across, around a lagoon that may be 160 ft (50 m) deep or more. Most of the reef itself is usually below the water surface; around the rim along the top are usually low, flat islands or more continuous strips of low, flat land.


atoll
a circular coral reef or string of coral islands surrounding a lagoon

atoll [′a‚tȯl]
(geography)
A ring-shaped coral reef that surrounds a lagoon without projecting land area and that is surrounded by open sea.

ATOLL - Acceptance, Test Or Launch Language


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Many of the islands at the boomerang-shaped coral atoll are studded with radar and other sophisticated missile tracking gear.
Many of the islands at the boomerang-shaped coral atoll are studded with radar and other sophisticated missile tracking gear.
Similar action was taken in Tuvalu, whose population of around 12,000 is settled on low-lying coral atolls.
 
 
 
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