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coastline

American  
[kohst-lahyn] / ˈkoʊstˌlaɪn /

noun

  • coastlines
    plural
  1. the outline or contour of a coast; shoreline.

  2. the land and water lying adjacent to a shoreline.


coastline British  
/ ˈkəʊstˌlaɪn /

noun

  1. the outline of a coast, esp when seen from the sea, or the land adjacent to it

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of coastline

First recorded in 1855–60; coast + line 1

Vocabulary lists containing coastline

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:

Others, like Arnold Welianto, who lives in Talibura, a village near the coastline in Sikka, East Nusa Tenggara, were shaken out of their beds.

From BBC Aug. 15, 2026

Outside of the main residence, the grounds of the property are just as attention-grabbing, featuring a spread of entertaining spaces, including covered patios and open-air lounges, all of which offer staggering coastline views.

From MarketWatch Aug. 14, 2026

With 3,500 miles of craggy coastline, Maine has evolved from a modest seasonal retreat into an increasingly sought-after luxury market.

From The Wall Street Journal Aug. 14, 2026

Even without El Niño, ocean temperatures have soared off parts of the coastline — a factor in the recent rounds of uncharacteristic muggy humidity.

From Los Angeles Times Aug. 10, 2026

If I angled myself a certain way, I could trace the coastline and glimpse a narrow seam of the South Side with its low-rise rooftops and intermittent stands of trees.

From "Becoming" by Michelle Obama

"Sanctions are being circumvented using ageing and poorly maintained tankers, putting coastlines and marine ecosystems at risk," she said.

From Barron's Aug. 6, 2026

As permafrost thaws and coastlines erode, some of that carbon is carried into the ocean.

From Science Daily Aug. 3, 2026

The National Weather Service has repeatedly warned of dangerous rip currents and elevated surf in recent weeks as multiple southerly swells battered the coastlines of Los Angeles and Ventura counties.

From Los Angeles Times Aug. 2, 2026

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 new migration from the coastlines was changing geography daily.

From "The Marrow Thieves" by Cherie Dimaline

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