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Definitions

reef

[reef] / rif /
NOUN
underwater or partially submerged ledge
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is likely that this reef is protected, for now, by its depths and the mountain's steep slopes.

From BBC • Mar. 7, 2026

The tide was lower than expected, so the landing craft were hung up on a reef.

From The Wall Street Journal • Mar. 4, 2026

One is a tiny animal related to jellyfish that creates the hard reef structure.

From Science Daily • Feb. 12, 2026

The team combined satellite measurements of ocean surface temperatures from the Coral Reef Watch system with on site reef surveys and aerial observations collected worldwide.

From Science Daily • Feb. 12, 2026

It sailed out through the reef to the deeper dark ocean, and Jack turned to wave and Nim waved back, though she knew he couldn’t see.

From "Nim’s Island" by Wendy Orr