A group of uninhabited volcanic islands in the South Atlantic, lying 480 km (300 miles) south-east of South Georgia. They are administered from the Falkland Islands.
Definition of South Sandwich Islands in US English:
South Sandwich Islands
proper noun
A group of uninhabited volcanic islands in the South Atlantic Ocean, 300 miles (480 km) southeast of South Georgia. They are administered from the Falkland Islands.