open sea

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English[edit]

Etymology[edit]

From Middle English open see, open se, equivalent to open +‎ sea.

Noun[edit]

open sea (countable and uncountable, plural open seas)

  1. That part of the sea out of sight of land.
    Synonym: open ocean
  2. A sea open to all nations, i.e. not a mare clausum.

Translations[edit]

See also[edit]