Definition

A circular coral island that surrounds a lagoon, often formed from the remains of coral reefs.

Example

The divers explored the vibrant marine life around the atoll.

Conversation

Have you ever seen a real atoll before?

No, I haven't, but I've heard they're beautiful.

Yeah, they are like a ring of coral islands around a lagoon.

That sounds amazing! I would love to visit one someday.

Synonyms & Antonyms

Root Explanation

Atoll originates from the Tahitian word 'atoll', meaning a ring-shaped coral reef or island. It describes a specific type of coral formation in the ocean.

Memory Tip

Imagine a ring of coral forming a circle around a lagoon — that's what an atoll is, a unique island shape from the Tahitian word.

Visually Confused Words