North Sea

American  

noun

1. an arm of the Atlantic Ocean between Great Britain and the European mainland. About 201,000 square miles (520,600 square kilometers); greatest depth, 1,998 feet (610 meters).

---

North Sea British  

noun

1. Former name: German Ocean.  an arm of the Atlantic between Great Britain and the N European mainland. Area: about 569 800 sq km (220 000 sq miles)

---

North Sea Cultural  

1. Arm of the Atlantic Ocean northwest of central Europe.

---

Discover More

Oil was discovered under the sea floor in 1970.

Etymology

Origin of North Sea

Firsr recorded before 1000

Example Sentences

According to the results, glaciers may have moved rocks from Scotland part of the way, possibly reaching Dogger Bank in what is now the North Sea.

From Science Daily • Jun. 9, 2026

Several attempts were made to get the whale - nicknamed "Timmy" and "Hope" - back into the North Sea, after it got stuck in the Baltic Sea in March.

From BBC • May 31, 2026

The US strikes pushed up the price of Brent North Sea crude, the international benchmark, by almost 4.5 percent on Tuesday to above $100 a barrel.

From Barron's • May 27, 2026

The price of North Sea Brent crude and West Texas Intermediate slipped close to five percent to $99.41 and $92.49 a barrel respectively.

From Barron's • May 25, 2026

She especially liked looking out at the dark storm clouds forming over the North Sea.

From "City Spies" by James Ponti