Definition from Wiktionary, the free dictionary
See also Atoll
- Rhymes: -əʊl
atoll (plural atolls)
- A type of island consisting of a ribbon reef that nearly or entirely surrounds a lagoon and supports, in most cases, one to many islets on the reef platform. Atolls have a unique geology, so not all islands with a reef and a lagoon are atolls.
atoll m (plural atolls)