- the oceans of the world considered as the N and S Pacific, the N and S Atlantic, and the Arctic, Antarctic, and Indian Oceans
WordReference Random House Learner's Dictionary of American English © 2026
sev•en seas /ˈsɛvən ˈsiz/USA pronunciation n. [plural;
the + ~;
sometimes: Seven Seas]
WordReference Random House Unabridged Dictionary of American English © 2026the + ~;
sometimes: Seven Seas]
- Oceanographythe waters of the world that can be traveled on.
sev′en seas′,
- Oceanographythe navigable waters of the world.
- 1870–75
Collins Concise English Dictionary © HarperCollins Publishers::
seven seas pl n
'seven seas' also found in these entries (note: many are not synonyms or translations):