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mare liberum

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noun ma·re li·be·rum \ˈmär-(ˌ)ā-ˈlē-bə-ˌru̇m\

Definition of mare liberum

  1. 1 :  a navigable body of water (as a sea) that is open to all nations

  2. 2 :  freedom of the seas



Origin and Etymology of mare liberum

New Latin, literally, free sea


First Known Use: 1652


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