atoll

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atoll
An atoll is created as a coral reef builds up around an eroding volcanic island.

a·toll

 (ăt′ôl′, -ŏl′, ā′tôl′, ā′tŏl′)
n.
An island or chain of islets connected by a coral reef that nearly or entirely encloses a lagoon.

[Dhivehi atholhu; probably akin to Sinhalese ätul, interior (from the interior lagoon), probably from Sanskrit *antala-, interior, variant of antara-; see en in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

atoll

(ˈætɒl; əˈtɒl)
n
(Physical Geography) a circular coral reef or string of coral islands surrounding a lagoon
[C17: from atollon, native name in the Maldive Islands]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

at•oll

(ˈæt ɔl, -ɒl, -oʊl)

n.
a ring-shaped coral reef or a string of closely spaced small coral islands, enclosing or nearly enclosing a shallow lagoon.
[1615–25; earlier atollon < French]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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atoll
An atoll develops (from left to right) when a volcanic island erodes and a ring of coral grows up around it. The depression left by the crater of an eroding volcano fills with water, forming a lagoon.

a·toll

(ăt′ôl′, ā′tôl′)
A coral island forming a ring that nearly or entirely encloses a shallow lagoon.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

atoll

A ring-shaped coral reef enclosing a lagoon.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.atoll - an island consisting of a circular coral reef surrounding a lagoonatoll - an island consisting of a circular coral reef surrounding a lagoon
coral reef - a reef consisting of coral consolidated into limestone
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
atolli
atol
atoll

atoll

[ˈætɒl] Natolón m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

atoll

[ˈætɒl] natoll m
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

atoll

nAtoll nt
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

atoll

[ˈætɒl] natollo
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Of those that went east, some landed on the many ocean islands such as Mauritius, Reunion and Aldabra, the last-named is a ring-shaped coral atoll that formed around 400,000 years ago.
To make matters worse, the oil is spilling into a UN Heritage Site known as East Rennell, and it is slowly damaging the coral atoll and the wildlife surrounding it.
Rennell Island is the largest raised coral atoll in the world and includes a UNESCO World Heritage site which extends kilometers out to sea.
The low-lying island, which rises barely 6 feet above the current sea level, is part of the vast Kwajalein coral atoll, a structure that formed as coral reefs grew around a sinking volcanic island long ago.
New shots were made also on a coral atoll, and he was recently in Mozambique, Zanzibar, and Tanzania, as well as the US states of Texas and Louisiana where he made an impressive image of an oak alley.
A mission is now under way to prove the theory as researchers make their way toward Nikumaroro, a coral atoll that is part of the Phoenix Islands of Kiribati.
Last year, a Pennsylvania-based group called International Group for Historic Aircraft Recovery (TIGHAR) repositioned the spotlight on an alternate theory: With their fuel rapidly depleting, Earhart and Noonan used celestial navigation to land on a remote coral atoll named Gardner Island, about 400 miles south of Howland Island, their original destination.
Imagine that the first crisis facing the next president would be a seizure by China of the Scarborough Shoal, a coral atoll off the Philippines in the South China Sea.
Home to two Unesco World Heritage sites, the archipelago shares a curious Arab connection: the fabled Aldabra, the world's largest raised coral atoll, first seen by early Arab seafarers of the 9th century A.D.
Dead Man Fall Suwarrow IT is 9294 miles from Glasgow to the low coral atoll in the Pacific Ocean's Cook Islands that this song is named after.
Atoll - 1 well is named after a coral reef, sometimes called a coral atoll, which is a ring-shaped coral reef, it added.