Dictionary.com

mare clausum

[ mair-ee -klaw-suhm, mahr-ey; Latin mah-re -klou-soom ]
/ ˈmɛər i ˈklɔ səm, ˈmɑr eɪ; Latin ˈmɑ rɛ ˈklaʊ sʊm /

noun

a body of navigable water under the sole jurisdiction of a nation.

QUIZZES

CAN YOU GUESS THESE WORDS FROM AROUND THE US?

American English is not always as it appears to be ... get to know regional words in this quiz!
Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?
Often it means something is impossible.
It’s another way to agree with someone.
It serves as an apology.
TAKE THE QUIZ TO FIND OUT
Compare mare liberum.

Origin of mare clausum

1645–55; <Latin: closed sea

Words nearby mare clausum

Mare Acidalium, Mare Australe, Mare Boreum, Mare Chronium, Mare Cimmerium, mare clausum, Mare Crisium, Mare Erythraeum, Mare Fecunditatis, Mare Frigoris, Mare Humorum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for mare clausum

mare clausum
/ (ˈmɑːreɪ ˈklaʊsʊm) /

noun

law a sea coming under the jurisdiction of one nation and closed to all othersCompare mare liberum

Word Origin for mare clausum

Latin: closed 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