Etymology

Southern Ocean

Today it means: The portion of the World Ocean surrounding Antarctica, variously taken as the waters south of the Antarctic Circle, the waters south of 60° S, or the waters bounded by the Antarctic Convergence. Full definition →

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The story

Formally adopted by the International Hydrographic Bureau's Limits of Oceans and Seas in 1928. (Omitted from the current 3rd edition, but restored in the draft 4th edition awaiting ratification.) A proprialization from southern ocean.

Etymology from Wiktionary, CC BY-SA 4.0.