basin

B2 · Upper Intermediate Countable noun Science Technical

n. an area of land where all the water from rain or melting snow flows into one river.

n. the entire geographical area drained by a river and its tributaries.

“The Amazon basin is home to the largest rainforest in the world.”

“Environmental scientists are monitoring the pollution levels across the entire river basin to identify the primary sources of industrial runoff.”

C1 · Advanced Countable noun Science Technical

n. a low area of land or a dip in the earth's surface.

n. a large-scale structural depression in the Earth's crust, often where sediments have accumulated over millions of years.

“The desert basin was surrounded by high mountains on all sides.”

“The sedimentary basin contains vast deposits of limestone, suggesting the region was once covered by a shallow prehistoric sea.”

B2 · Upper Intermediate Countable noun

n. a part of a harbour or dock where the water is kept still for boats.

n. an enclosed or partly enclosed area of water, such as a dock, where the water level is often controlled.

“The small fishing boats were safely tied up in the yacht basin.”

“The city council approved plans to convert the old industrial basin into a modern marina with floating docks and waterfront dining.”