coast·​line | \ ˈkōs(t)-ˌlīn How to pronounce coastline (audio) \

Definition of coastline

1 : a line that forms the boundary between the land and the ocean or a lake
2 : the outline of a coast

Examples of coastline in a Sentence

The plane flew along the eastern coastline.
Recent Examples on the Web Tonight: Clouds gradually increase as what could become Tropical Storm Fay pushes up the Virginia and Delmarva coastline. David Streit, Washington Post, "D.C.-area forecast: Humid heat shows little sign of relenting. Tropical showers could skirt us Friday.," 9 July 2020 Scientists in Australia have discovered unusual underwater rivers along the country’s coastline. Fox News, "Underwater rivers discovered along Australia’s coastline," 20 June 2020 Our neighbor to the north is renowned for its scenery — towering mountain peaks, emerald forests, and stunning stretches of coastline. Siobhan Reid, Travel + Leisure, "The Top 10 Resort Hotels in Canada," 8 July 2020 The stretches of coastline, which are all operated by the county, add to a growing list of city beaches that will close for the holiday in an effort to keep crowds from congregating on the sand and potentially spreading COVID-19. Los Angeles Times, "County-run beaches in O.C. will close July 4th weekend as coronavirus cases surge," 2 July 2020 On this remote island, guests have exclusive use of all nine miles of coastline and surrounding waters. Paul Rubio, Condé Nast Traveler, "The 14 Best Private Island Resorts," 2 July 2020 Four marinas and miles of coastline along the St. Andrews Bay also make the area a big draw for visitors interested in boating, fishing, and watersports. Southern Living, "Panama City vs. Panama City Beach: What’s the Difference?," 30 June 2020 The North African country with a southern Mediterranean coastline has been beset by instability and internal conflict ever since NATO forces intervened and its leader of four decades, Col. Moammar Gaddafi, was killed in 2011. Abraham Mahshie, Washington Examiner, "US ‘behind the curtain’ in Libya conflict as Turkey and Russia vie for influence," 18 June 2020 And Colorado State University researchers predict a 70% chance a major hurricane will hit the US coastline this season. Tyler Mauldin, CNN, "The pandemic could lead to longer power outages following a hurricane, industry leaders warn," 28 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'coastline.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of coastline

1856, in the meaning defined at sense 1

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Time Traveler for coastline

Time Traveler

The first known use of coastline was in 1856

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Statistics for coastline

Last Updated

26 Jul 2020

Cite this Entry

“Coastline.” Dictionary, Merriam-Webster, Accessed 3 Aug. 2020.

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How to pronounce coastline (audio)

English Language Learners Definition of coastline

: the land along the edge of a coast

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