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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
The weather service issued a a high surf advisory that was extended through 11 a.m. Saturday, and a coastal flood advisory along much of the Bay coastline, set to run through 1 p.m. Sunday. Rick Hurd, The Mercury News, 13 Nov. 2024 The clifftop adults-only retreat overlooks 500m of pristine coastline, on the perimeter or the capital city of Muscat, and is also adjacent to a family-friendly offering, Shangri-La Bar Al Jissah. Angelina Villa-Clarke, Forbes, 4 Nov. 2024 Their eyes are focused on the coastline of Baliceaux. Seth Berry, The Christian Science Monitor, 25 Oct. 2024 In the last few weeks, the city installed six deep wells near the coastline to pump out groundwater — the impetus for landslide movement. Grace Toohey, Los Angeles Times, 25 Oct. 2024 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

Dictionary Entries Near coastline

Cite this Entry

“Coastline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coastline. Accessed 18 Nov. 2024.

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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