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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.

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

From The Wall Street Journal • Mar. 4, 2026

"Around half of reef locations affected by bleaching-level heat stress were exposed twice or more during the three-year event -- often with devastating consequences," said Scott Heron, professor of physics at James Cook University.

From Science Daily • Feb. 12, 2026

The clandestine artisanal miners, many from neighbouring countries, have become an entrenched presence in the shantytowns that ring Johannesburg and its satellite settlements along the gold reef.

From Barron's • Jan. 23, 2026

In Belfast Lough, the oysters are placed on the seabed to form a natural reef over time and potentially provide habitat for spat from the nurseries to settle on.

From BBC • Jan. 9, 2026

The reef is gnarly here, not something a surfer wants to be dropped on by a ten-foot wall of water.

From "Clairboyance" by Kristiana Kahakauwila