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mare (1)
mare (2)
mare clausum
Mare Crisium
Mare Fecunditatis
Mare Frigoris
Mare Humorum
Mare Imbrium
mare liberum
Mare Nectaris
mare nostrum
Mare Nubium
Mare Orientale
mare’s nest
mare’s-tail
Mare Serenitatis
Mare Tranquillitatis
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mare liberum

ma·re li·be·rum [ m ray lbə rm ] (plural ma·re liberums)


noun 
Definition:
 
sea open to all: an area of sea that is open to the ships of all countries

[Mid-17th century. < Latin, "free sea," title of a treatise (1609) by Dutch jurist Hugo Grotius, defending free access to the ocean by all nations]
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