icecap
/ˈaɪsˌkæp/
noun
- A thick layer of ice that permanently covers a large area, especially the polar regions.
- The Arctic icecap shrinks during the summer and grows again in the winter.
- The polar icecap is melting at an alarming rate due to global warming.
- Scientists study the Greenland icecap to learn about past climate conditions.
Synonyms