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

Its top portion was a marine blue, and the pectoral fins were wide and long. William Mckeever,, "Summer on the Cape means shark panic. But what if we embraced these majestic fish, instead of pushing them away?," 3 July 2019 After the Marine Mammal Protection Act, which protects marine animals, was enacted in 1972, the seal population exploded after gray seals recolonized in the area. Allen Kim, CNN, "Great white sharks are invading Cape Cod just in time for the Fourth of July," 3 July 2019 The department has increased marine patrols in response to high waters to help ensure boaters are safe and following the rules on waterways. Anna Bauman, Detroit Free Press, "Michigan water levels are at record highs: Why it's so dangerous for boaters, swimmers," 2 July 2019 Getting into Pitcairn’s harbor is the marine equivalent of threading a needle while riding a roller coaster. Stanley Stewart, Condé Nast Traveler, "Exploring Polynesia's Islands by Cruise," 28 June 2019 Along the way, keep an eye out for crinoid and other marine fossils. Steve Larese, National Geographic, "Eight epic stops in the Four Corners region," 27 June 2019 Here’s the Deal with Those Slimy, Brain-Like Blobs Washing Ashore in Florida and the Carolinas Salps, like their relatives the sea pork, are part of a group called tunicates, are considered one of the most evolved of all marine invertebrates. Meghan Overdeep, Southern Living, "The Tiny Clear Blobs Washing up on Beaches Are Even Weirder Than You Think," 25 June 2019 Meanwhile, Oregon State University officials have pressed ahead with construction of a $50 million marine studies building in the tsunami inundation zone near the mouth of Yaquina Bay., "Oregon Legislature repeals ban on building in tsunami zone," 24 June 2019 This technology is controversial because of the potential impact of loud sounds on marine wildlife and its intensive use by oil exploration companies. Emilie Hooft, The Conversation, "We probed Santorini’s volcano with sound to learn what’s going on beneath the surface," 24 June 2019

Recent Examples on the Web: Noun

The body was recovered by the Chicago police marine unit. Eliza Fawcett,, "Body recovered from Sherman Park lagoon," 5 July 2019 The dead zones are especially harmful to key Maryland exports like crabs and oysters, even though other scientists say some smaller marine creatures can withstand the oxygen void. USA TODAY, "Troll trail, coal train derailment, geyser record: News from around our 50 states," 27 June 2019 So these nets continue killing marine life until they’re taken out of the ocean. Ephrat Livni, Quartz, "How to collect 40 tons of plastic trash from the ocean in a month," 24 June 2019 Meet Our Experts National Geographic Emerging Explorer Asha de Vos is a Sri Lankan marine biologist, ocean educator, and pioneer of blue whale research within the Northern Indian Ocean. National Geographic, "Bali High School Expedition," 17 June 2019 These new networks are designed for M2M and edge architectures, making them perfect for industrial purposes, from trawling marine habitats for gaseous contaminants to monitoring the operation of shipping networks, railways, and oil rigs. Popular Mechanics, "The Invisible Battle for America’s Airwaves," 17 June 2019 The Florida statutes have laws governing the treatment of marine turtles, nests and eggs as well, according to the Florida Fish and Wildlife Conservation Commission. Eric Todisco,, "Woman Arrested for Allegedly ‘Stomping All Over’ Nest of Sea Turtles on Florida Beach," 17 June 2019 Ocean conservation group Project AWARE estimates that the cleanup might have removed as much as 3,200 pounds of marine debris. Michelle Lou, CNN, "633 divers collect over 1,500 pounds of trash at a Florida beach -- and set a world record," 16 June 2019 The fish are in Seward has always been a first-choice destination for Alaska anglers, who flock to the seaside city of 3,000 each summer for its easy access to the bay and its world-class marine fisheries. Matt Tunseth, Anchorage Daily News, "Working the night shift: Snagging salmon in Seward," 11 June 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

9 Jul 2019

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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

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