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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.

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Surveys conducted in the 1960s, which were primarily designed to locate productive fishing grounds, identified what appeared to be a deep-water coral reef.

From Science Daily ● Sep. 15, 2026

Others are placed onto table frames fixed to the ocean floor, and yet others are mounted onto plugs, screwed into a three-hole "cookie" and planted onto the reef.

From Barron's ● Sep. 10, 2026

Environmental experts say the spill threatens wildlife, protected ecosystems and fishing communities around Qeshm, which is home to mangrove forests, nearby coral reef habitats and nesting sites for critically endangered Hawksbill turtles.

From BBC ● Aug. 14, 2026

In one dramatic episode, an American ship, the Philadelphia, was grounded on a reef and captured, but in 1804, the Americans launched a successful mission to rescue her with no casualties.

From Salon ● Jul. 4, 2026

Whatever it is, it’s hovering above the reef break.

From "Clairboyance" by Kristiana Kahakauwila

The volcanic island is surrounded by reefs, white-sand beaches, and turquoise lagoons, offering Gibson an extraordinary level of privacy far removed from Hollywood.

From MarketWatch ● Sep. 1, 2026

Over two days in July, his team did eight one-hour dives, exploring the undersides of rocky reefs to count the eggs.

From BBC ● Aug. 29, 2026

More than 450 million years ago, long before dinosaurs appeared and before animals or plants had spread widely across dry land, crinoids were already thriving in some of Earth's earliest coral reefs.

From Science Daily ● Aug. 21, 2026

Hotter seas can have damaging knock-on effects on the planet, fuelling stronger storms and rainfall and bleaching coral reefs.

From Barron's ● Aug. 10, 2026

They were different from the fish on the reefs, having larger eyes and fins that drifted out from their bodies like kelp.

From "Island of the Blue Dolphins" by Scott O'Dell

Currently, less than a tenth of America’s old oil and gas platforms are reefed.

From Economist ● Jun. 12, 2014

Not one platform off California has been reefed.

From Economist ● Jun. 12, 2014

Divers and many fishermen want more to be reefed; shrimpers complain that reefs prevent them from dragging nets across parts of the ocean floor.

From Economist ● Jun. 12, 2014

It was a ribbon chute made of concentric rings of strong fabric 2 in. wide, and at first it was reefed by a band around it to lower the shock of opening.

From Time Magazine Archive

There was a sailboat with rusty red sails reefed around the booms of the fore and aft masts.

From "Hole in My Life" by Jack Gantos

Part of that action is Patten’s realization that the sailor’s standard storm tactics—including reefing, heaving-to and lying a-hull—will not work in such an intense blow.

From The Wall Street Journal ● Dec. 8, 2025

For now, the evidence suggests that reefing is a rare policy.

From Economist ● Jun. 12, 2014

Operators are loth to estimate costs publicly, but the Tulane University Energy Institute reckons that reefing the state’s 27 platforms could save $2 billion.

From Economist ● Jun. 12, 2014

What Dean likes most about the design are the space, comfort and the simple single-line reefing system, which Nautor first perfected on his Swan 44.

From Time Magazine Archive

Pole Star was reefing its own sails and slowing, guiding itself with the minimum acceleration so that it could come up beside them and board.

From "Ship Breaker" by Paolo Bacigalupi




Vocabulary lists containing reef


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