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).

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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)

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North Sea Cultural  

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

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Discover More

Oil was discovered under the sea floor in 1970.

Etymology

Origin of North Sea

Firsr recorded before 1000

Example Sentences

It has not said which sites will be targeted but it has previously targeted offshore sites in the southern North Sea, the English Channel, and off the south-west coast of England.

From BBC • Jun. 23, 2026

"The UK has a much better portion of the North Sea -- they don't want to do it for environmental purposes."

From Barron's • Jun. 22, 2026

In addition, Aberdeen is the heart of the North Sea oil and gas industry.

From BBC • Jun. 19, 2026

International benchmark Brent North Sea crude fell to a three-month low under $79 per barrel.

From Barron's • Jun. 16, 2026

The rest of the crew was made up of able seamen accustomed to the harsh weather of the North Sea, two doctors, a handful of university scientists, officers, a carpenter, and a cook.

From "Shipwreck at the Bottom of the World" by Jennifer Armstrong