noun🔗ShareAtollA 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 airplane flew over a beautiful atoll, a ring of small islands surrounding a calm, blue lagoon. "L'avion a survolé un magnifique atoll, un anneau de petites îles entourant un lagon bleu et calme.geologygeographyenvironmentnatureoceanChat with AIVocabulary GamePractice Reading
