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Inland Sea

American  

noun

  1. a sea in SW Japan, enclosed by the islands of Honshu, Shikoku, and Kyushu. 240 miles (385 km) long.

Inland Sea British  

noun

  1. Japanese name: Seto Naikai.  a sea in SW Japan, between the islands of Honshu, Shikoku, and Kyushu

"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

Example Sentences

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Appeared in the October 4, 2025, print edition as 'In Peril On an Inland Sea'.

From The Wall Street Journal • Oct. 3, 2025

In Kasaoka, a port city on the Seto Inland Sea, Yuki Senoo and his father run one of the two last nori producers left in town.

From Los Angeles Times • Aug. 23, 2023

I’ve been really impressed by the art project around Naoshima in the Seto Inland Sea and how it has developed over the past 30 years.

From New York Times • Nov. 17, 2022

Naoshima, an art-museum island in the Inland Sea.

From Washington Post • Jan. 15, 2020

Their decisive naval encounter, with the Emperor on board ship, occurred at Danno-ura in the Japanese Inland Sea on April 24, 1185.

From "Cosmos" by Carl Sagan

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.