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mare liberum

[mair-ee lib-er-uh m, mahr-ey; Latin mah-re lee-be-roo m]
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noun
  1. a body of navigable water to which all nations have unrestricted access.
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Compare mare clausum.

Origin of mare liberum

1645–55; < Latin: free sea
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for mare liberum

mare liberum

noun
  1. law a sea open to navigation by shipping of all nationsCompare mare clausum
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Word Origin

Latin: free sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012