1
a
: of or relating to the sea
marine life
marine biology
b
: of or relating to the act or practice of sailing over the sea : nautical
a marine chart
c
: of or relating to the commerce (see commerce entry 1 sense 2) of the sea : maritime
marine law
d
: depicting the sea, seashore, or ships
a marine painter
2
: of or relating to marines (see marine entry 2 sense 2)
marine barracks
1
a
: the mercantile and naval shipping of a country
b
: seagoing ships especially in relation to nationality or class
2
: one of a class of armed services personnel serving on shipboard or in close association with a naval force
specifically
: a member of the U.S. Marine Corps
3
: an executive department (as in France) having charge of naval affairs
4
: a marine picture : seascape
Synonyms
Examples of marine in a Sentence
Adjective
marine animals such as dolphins and whales
he loves collecting little marine creatures while at the beach
Noun
He is a former U.S. Marine.
the U.S. Army, Navy, Air Force, and Marines
Recent Examples on the Web
Melissa Cristina Marquez, Forbes, 7 Jan. 2025
For the last decade, researchers have been visiting the atoll to study sharks, which not only help maintain the balance of marine ecosystems globally but are also important spiritual symbols in Polynesian culture.
—Sarah Kuta, Smithsonian Magazine, 7 Jan. 2025
David Axe, Forbes, 7 Jan. 2025
Daniel Taylor From academy footballers to rejection, reflection, the marines… and The Athletic
By Jacob Tanswell
A unique piece of journalism, brilliantly executed.
—The Athletic Uk Staff, The Athletic, 31 Dec. 2024
See all Example Sentences for marine 
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Adjective
This growing presence in marine habitats that sharks inhabit naturally increases the likelihood of encounters with... well, sharks.
—Melissa Cristina Marquez, Forbes, 7 Jan. 2025
For the last decade, researchers have been visiting the atoll to study sharks, which not only help maintain the balance of marine ecosystems globally but are also important spiritual symbols in Polynesian culture.
—Sarah Kuta, Smithsonian Magazine, 7 Jan. 2025
Noun
Also today: a Ukrainian missile struck a concentration of 810th Naval Infantry Brigade marines in Ivanovskoe, 25 miles north of Sudzha, according to CDS.
—David Axe, Forbes, 7 Jan. 2025
Daniel Taylor From academy footballers to rejection, reflection, the marines… and The Athletic
By Jacob Tanswell
A unique piece of journalism, brilliantly executed.
—The Athletic Uk Staff, The Athletic, 31 Dec. 2024
See all Example Sentences for marine
Dictionary Entries Near marine
Cite this Entry
“Marine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/marine. Accessed 18 Jan. 2025.
Copy CitationKids Definition
marine
2 of 2 noun1
: the commercial and naval shipping of a country
2
: one of a class of soldiers serving aboard ship or in association with a naval force
especially
: a member of the U.S. Marine Corps
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