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mare nostrum

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noun ma·re no·strum \ˈmär-(ˌ)ā-ˈnōs-trəm\

Definition of mare nostrum

  1. :  a navigable body of water (as a sea) that belongs to a single nation or is mutually shared by two or more nations



Origin of mare nostrum

New Latin, literally, our sea


First Known Use: 1921


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