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English definition of “atoll”

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atoll

noun [C] uk   /ˈæt.ɒl/ us    /-ɑːl/
a ring-shaped island formed of coral (= rock-like natural substance) that surrounds a lagoon (= area of sea water): the Bikini Atoll
Translations of “atoll”
in Chinese (Traditional) 環狀珊瑚島,環礁…
in Chinese (Simplified) 环状珊瑚岛,环礁…
(Definition of atoll from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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