coastline
Americannoun
-
the outline or contour of a coast; shoreline.
-
the land and water lying adjacent to a shoreline.
noun
Other Word Forms
Noun Inflected Forms
Etymology
Origin of coastline
Vocabulary lists containing coastline
East Asia - Middle School
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Mexico - Introductory
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Southeast Asia - Introductory
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
Officials warned of hazardous conditions — such as high surf and strong rip currents — across much of the Southern California coastline.
From Los Angeles Times ● Jul. 21, 2026
Moisés López Pedroza, a spokesman for Mexico’s navy, said he could only confirm that no attacks had occurred within his country’s Exclusive Economic Zone, which extends 200 nautical miles from Mexico’s coastline.
From Los Angeles Times ● Jul. 20, 2026
It was the latest visit in a tour of Italy's coastline organised by the ambassador to celebrate the 250th anniversary of the US declaration of independence.
From Barron's ● Jul. 17, 2026
On Monday, Hartlepool Borough Council leader Graham Harrison, of Reform UK, said he had asked for "a full review of the current water safety arrangements at Seaton Carew" and across the area's coastline.
From BBC ● Jul. 14, 2026
On the tabletop, he traced a coastline, red wine glowing unnaturally against the wood.
From "Blood of Olympus" by Rick Riordan
Saudi Arabia was exporting about 4 million barrels of oil a day through Yanbu, at the end of the East-West pipeline that links the kingdom’s two coastlines.
From MarketWatch ● Jul. 21, 2026
The program provides states the ability to review, regulate and provide input on federal projects that affect their coastlines, but not broad veto power.
From Los Angeles Times ● Jun. 26, 2026
Large groups strand together, she explained, because they travel in the same currents and are deposited along coastlines at the same time.
From BBC ● Jun. 18, 2026
They can allow the oil to spread across the water, threatening coastlines and marine life, or they can set it on fire.
From Science Daily ● Jun. 5, 2026
For three days, they traveled over seas and islands and coastlines, and then they spotted the Juggernaut, floating on the waves of the northern ocean.
From "The Wild Robot Protects" by Peter Brown
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.
