- That part of Antarctica claimed by Britain. Designated in 1962 from territory that was formerly part of the Falkland Islands Dependencies, it includes some 388,500 sq. km (150,058 sq. miles) of the continent of Antarctica as well as the South Orkney Islands and South Shetland Islands in the South Atlantic.
More definitions of British Antarctic TerritoryDefinition of British Antarctic Territory in:
- The US English dictionary