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Definition of atoll noun from the Oxford Advanced Learner's Dictionary

atoll

noun
 
/ˈætɒl/
 
/ˈætɔːl/
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  1. an island made of coral and in the shape of a ring with a lake of seawater (called a lagoon) in the middle
    Word Originearly 17th cent.: from Maldivian atoḷu.
See atoll in the Oxford Advanced American Dictionary
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Nearby words

trait
noun
 
 
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