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
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
JSTOR Daily, 24 Oct. 2025
Off the coast of a small island in southern Indonesia, boaters watched the waves as some marine mammals approached the boat.
—Aspen Pflughoeft, Miami Herald, 23 Oct. 2025
Mark Ellwood, Robb Report, 22 Oct. 2025
Quest for the Devil Fruit – Dodge infamous villains and escape the marines in a high-stakes race to reach a mysterious Devil Fruit ahead of the Straw Hats.
—Jennifer Maas, Variety, 7 Oct. 2025
See All Example Sentences for marine
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Adjective
There’s a lot of stuff in the ocean, and marine debris tends to aggregate in the same places as does the whale sharks’ primary prey.
—JSTOR Daily, 24 Oct. 2025
Off the coast of a small island in southern Indonesia, boaters watched the waves as some marine mammals approached the boat.
—Aspen Pflughoeft, Miami Herald, 23 Oct. 2025
Noun
There’s just a handful of men and women worldwide who innately grasp what makes a luxury marine adventure, well, truly luxurious.
—Mark Ellwood, Robb Report, 22 Oct. 2025
Quest for the Devil Fruit – Dodge infamous villains and escape the marines in a high-stakes race to reach a mysterious Devil Fruit ahead of the Straw Hats.
—Jennifer Maas, Variety, 7 Oct. 2025
See All Example Sentences for marine
Cite this Entry
“Marine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/marine. Accessed 31 Oct. 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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