MEANING
A roughly ring-shaped coral reef, often with islands, surrounding a lagoon.
Use it for
Words that belong together
- coral atoll
- island atoll
On the page
A lagoon lay inside the atoll.
The ship approached the coral atoll.
Low islands dotted the atoll’s reef.
Related words
Word forms
- Base
- atoll
Usage notes
Primary category: environment. Forms: Singular atoll; plural atolls. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.
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