ATOLL

Atoll

An atoll is a ring-shaped coral reef including a coral rim that encircles a lagoon partially or completely. There may be coral islands/cays on the coral rim.

The above text is a snippet from Wikipedia: Atoll
and as such is available under the Creative Commons Attribution/Share-Alike License.

atoll

Noun

  1. 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.


The above text is a snippet from Wiktionary: atoll
and as such is available under the Creative Commons Attribution/Share-Alike License.

Need help with a clue?
Try your search in the crossword dictionary!