coastline

noun

coast·​line ˈkōs(t)-ˌlīn How to pronounce coastline (audio)
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Explore Destin Seagrove, Florida The 24-mile stretch of Florida panhandle coastline along Scenic Highway 30A has been picking up steam as a top vacation destination for travelers from the South and beyond. Tara Massouleh McCay, Southern Living, 30 Mar. 2025 Seagrass also cleans polluted water and protects coastlines from erosion. Ian Urbina, Los Angeles Times, 28 Mar. 2025 Though the 2021-debuting ship offers robust itineraries to the Caribbean and Panama, our seven-day Norse Legends cruise started and ended in the Netherlands, making memorable stops to photogenic hamlets on Norway’s coastline along the way. Demarco Williams, Forbes.com, 28 Mar. 2025 That April and May, Russia focused its offensive on Ukraine's southern coastline on the Black Sea, seizing several major port cities and imposing a blockade on food exports. Cybele Mayes-Osterman, USA Today, 25 Mar. 2025 See All Example Sentences for coastline

Word History

First Known Use

1856, in the meaning defined at sense 1

Time Traveler
The first known use of coastline was in 1856

Browse Nearby Words

Cite this Entry

“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 9 Apr. 2025.

Kids Definition

coastline

noun
coast·​line ˈkōst-ˌlīn How to pronounce coastline (audio)
: the outline or shape of a coast
Last Updated: - Updated example sentences
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