Question

what is meant by dead sea

Answer 1

The Dead Sea – bordering Israel, the West Bank and Jordan – is a salt lake whose banks are more than 400m below sea level, the lowest point on dry land. Its famously hypersaline water makes floating easy, and its mineral-rich black mud is used for therapeutic and cosmetic treatments at area resorts. The surrounding desert offers many oases and historic sites.

Answer 2

It is a large lake located on the border of Israel and Jordan. Its called the dead sea as it has excessive salinity in its water and aquatic plants and animals can't survive in such an environment.