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
Laylan Connelly, Orange County Register, 28 May 2024
Southern California’s deep marine layer — likely stretching to the inland foothills and valleys Saturday — will be weakening, and highs in the valleys will reach into the upper 70s by Monday.
—Grace Toohey, Los Angeles Times, 24 May 2024
See all Example Sentences for marine 
Adjective
But this holiday weekend will kick off with a thick marine layer lingering Friday and Saturday, an abundance of clouds and a chance for drizzle along the coastline, said Brian Adams, meteorologist for the National Weather Service.
—Laylan Connelly, Orange County Register, 28 May 2024
Southern California’s deep marine layer — likely stretching to the inland foothills and valleys Saturday — will be weakening, and highs in the valleys will reach into the upper 70s by Monday.
—Grace Toohey, Los Angeles Times, 24 May 2024
See all Example Sentences for marine
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'marine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near marine
Cite this Entry
“Marine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/marine. Accessed 1 Jun. 2024.
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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share