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territorial waters

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plural noun
the waters of a littoral state that are regarded as under the jurisdiction of the state: traditionally those waters within three miles (4.8 km) of the shore, but in the 20th century claims by coastal nations have extended to 12 or even 200 miles (19.3 or 321.8 km).
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Also called marine belt.

Origin of territorial waters

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use territorial waters in a sentence

British Dictionary definitions for territorial waters

territorial waters

pl n
the waters over which a nation exercises jurisdiction and control
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
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