ma·​rine | \ mə-ˈrēn How to pronounce marine (audio) \

Definition of marine

 (Entry 1 of 2)

1a : 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



Definition of marine (Entry 2 of 2)

1a : 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

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Synonyms for marine

Synonyms: Adjective

maritime, oceanic, pelagic

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Examples of marine in a Sentence


marine animals such as dolphins and whales he loves collecting little marine creatures while at the beach


He is a former U.S. Marine. the U.S. Army, Navy, Air Force, and Marines
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Recent Examples on the Web: Adjective

The carcass showed had no evidence of marine gear interference or evidence of any other human interaction. USA TODAY, "Disney surprise, foreign feral hogs, porous pavement: News from around our 50 states," 13 Sep. 2019 John McDevitt, a former assistant fire chief, accredited marine surveyor and chairman of a National Fire Protection Assn. Los Angeles Times, "34 people trapped on burning boat. The crew was asleep and unable to help, officials say," 13 Sep. 2019 The Coast Guard marine board investigation announced Wednesday is expected to take a year or longer to complete, but urgent safety actions could be implemented before then, the Coast Guard said in a statement. NBC News, "Body of last missing victim in deadly California boat fire is found," 12 Sep. 2019 Now, marine researchers are exploring how the unique current patterns near seamounts nurture their extraordinarily rich ecology—and coat them with some of the planet's richest mineral deposits. Warren Cornwall, Science | AAAS, "Mountains hidden in the deep sea are biological hot spots. Will mining ruin them?," 12 Sep. 2019 The marine layer is expected to stay offshore during the late afternoon and early evening hours Monday through Thursday, which is good news for Padres fans. San Diego Union-Tribune, "San Diego’s weather turns cool, but the relief will be short-lived," 9 Sep. 2019 Benedict explains that the marine layer of cold, foggy ocean air typically hangs 1,200 feet to 1,500 feet above the surface of the water. Stephanie Cain, Fortune, "Some of California’s Most Famous Wines Came from a Science Experiment," 8 Sep. 2019 The job is a joint venture between marine construction firms Manson Construction of Seattle and Connolly-Pacific Co. of Long Beach. Daniel Langhorne, Daily Pilot, "Navy awards $154 million construction contract to modernize Seal Beach base," 5 Sep. 2019 The White House has proposed a $500m-a-year service that would sit demurely within the air force, much as the marine corps is a component of the navy. The Economist, "Donald Trump unveils Space Command," 5 Sep. 2019

Recent Examples on the Web: Noun

Spot exotic marine and bird life, photograph monkeys in their natural habitat, and travel to a rural village to help local community members with service projects. National Geographic, "Costa Rica Middle School Expedition," 10 Sep. 2019 In a conversation with, Hans W. Paerl — a professor of marine and environmental sciences at UNC-Chapel Hill — explains what the algae is, as well as the risk of human sickness or death after exposure. Jen Juneau,, "Is Blue-Green Algae Toxic for Children? What to Know," 16 Aug. 2019 Plastic and microplastics have been thought of as marine and aquatic pollutants, ending up in waterways, oceans and the animals that live within them. Los Angeles Times, "Microplastic in the atmosphere is making its way to the pristine Arctic," 15 Aug. 2019 For marine and terrestrial organisms alike, rafting may be a key dispersal mechanism. Raleigh Mcelvery, Smithsonian, "Ancient Sea Life May Have Hitched Across Oceans on Giant Living Rafts," 12 Aug. 2019 Southcom, which is headquartered in Florida, includes resources from the army, navy, air force, marines, and other agencies. Lila Maclellan, Quartz, "The Pentagon is testing powerful mass-surveillance balloons above six US states," 3 Aug. 2019 The Blue Angels are a flight demonstration squadron comprised of sailors and marines who show off the pride of the Navy and Marine Corps. Kaila Contreras, Houston Chronicle, "Kingwood graduate joins vaunted U.S. Navy Blue Angels flight demonstration squadron," 25 July 2019 The battle raged for several days with about 1,000 marines and sailors killed and more than 2,000 wounded, according to the agency. Sheila Vilvens,, "Remains of Ohio man who died in WWII return home Thursday, public funeral set for Saturday," 24 July 2019 Kraemer is a full service heavy civil contractor serving three primary markets: transportation, rail, and marine. Kieran Nicholson, The Denver Post, "CDOT names contractor that will rebuild collapsed stretch of U.S. 36 in Westminster," 17 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'marine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of marine


15th century, in the meaning defined at sense 1a


1669, in the meaning defined at sense 1a

History and Etymology for marine

Adjective and Noun

Middle English, from Latin marinus, from mare sea; akin to Old English mere sea, pool, Old High German meri sea, Old Church Slavonic morje

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Statistics for marine

Last Updated

17 Sep 2019

Look-up Popularity

Time Traveler for marine

The first known use of marine was in the 15th century

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More Definitions for marine



English Language Learners Definition of marine

 (Entry 1 of 2)

: of or relating to the sea or the plants and animals that live in the sea
: of or relating to sailing on the sea or doing business (such as trading) by sea



English Language Learners Definition of marine (Entry 2 of 2)

: a member of the U.S. Marine Corps or the British Royal Marines


ma·​rine | \ mə-ˈrēn How to pronounce marine (audio) \

Kids Definition of marine

 (Entry 1 of 2)

1 : of or relating to the sea marine animals
2 : of or relating to the navigation of the sea : nautical marine charts
3 : of or relating to soldiers in the United States Marine Corps marine barracks



Kids Definition of marine (Entry 2 of 2)

1 : a soldier of the United States Marine Corps
2 : the ships of a country

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More from Merriam-Webster on marine

Rhyming Dictionary: Words that rhyme with marine

Thesaurus: All synonyms and antonyms for marine

Spanish Central: Translation of marine

Nglish: Translation of marine for Spanish Speakers

Britannica English: Translation of marine for Arabic Speakers Encyclopedia article about marine

Comments on marine

What made you want to look up marine? Please tell us where you read or heard it (including the quote, if possible).


concealment of treason or felony

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