coastline
Americannoun
-
coastlines
plural
-
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
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
Mexico - Introductory
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Southeast Asia - Introductory
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
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:
Much of the California coastline is under coastal flood advisories beginning Sunday, with minor to moderate flooding expected due to “historically high tides,” Thompson said.
From Los Angeles Times ● Oct. 25, 2026
The options are not attractive: avoid vast swaths of coastline, or live with a poorly understood risk.
From Science Daily ● Oct. 19, 2026
The group also controls Yemen’s coastline along the Bab al-Mandeb Strait, a key route for Saudi oil exports, according to the report.
From The Wall Street Journal ● Oct. 19, 2026
These shuttle ships use a route close to Oman's coastline.
From BBC ● Oct. 16, 2026
They speak of Uhmma’s early years gathering and drying fish along the Korean coastline.
From "A Step from Heaven" by An Na
![]()
The most significant effects are expected along Orange and San Diego counties’ coastlines this week, where the high tides are forecast to cause localized flooding, more coastal erosion and other hazards.
From Los Angeles Times ● Oct. 25, 2026
Kelvin waves are totally natural, forming throughout the year from warming ocean water and usually not impacting coastlines by a noticeable amount.
From Salon ● Oct. 22, 2026
The satellite's ocean and land color instrument has already delivered detailed images of landscapes and coastlines, while its radar altimeter has produced encouraging measurements of ocean and ice sheet elevations.
From Science Daily ● Oct. 12, 2026
Based on the latest projections, the coastlines of Alabama and Mississippi could be the most affected, Molchanov noted.
From MarketWatch ● Oct. 9, 2026
I was awed by the immense beauty of South Africa, seen from high up in the clouds: rolling hills and plains, meandering rivers and mountain ranges, thick forests, magnificent coastlines, luscious farmland.
From "Kaffir Boy: An Autobiography" by Mark Mathabane
![]()
Random Word
Spin the wheel and learn a new word!
Get a wordDefinitions 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.