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Definition of atoll

atoll

/ˈæt.ɔːl/
at · oll
Plural:atolls
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atoll Lexical Profile

atoll Game Scores & Validity

• noun

1

A ring-shaped coral reef, island, or series of islets that surrounds a central marine lagoon, typically formed around a submerged volcanic seamount in tropical oceans such as the Pacific and Indian Oceans.

Example

"The marine biologists anchored their research vessel inside the calm lagoon of the remote Pacific atoll."

Synonyms
View all synonyms for atoll

• Nearby Words

atmospheric
atmospherical
atmospherically
atoll
atom
atomic
atomically

Word Origin & Etymology

Borrowed in the early 17th century from Dhivehi 'atholhu', the Indo-Aryan language spoken in the Maldives, where ring-shaped coral island chains are the predominant geographical feature.

Cite this Entry

Wordmom. (2026). Definition of Atoll. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/atoll
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