sub·​ma·​rine | \ ˈsəb-mə-ˌrēn How to pronounce submarine (audio) , ˌsəb-mə-ˈrēn \

Definition of submarine

 (Entry 1 of 3)

: underwater especially : undersea submarine plants submarine minerals



Definition of submarine (Entry 2 of 3)

1 : something that functions or operates underwater specifically : a naval vessel designed to operate underwater
2 : a large sandwich on a long split roll with any of a variety of fillings (such as meatballs or cold cuts, cheese, lettuce, and tomato)

called also grinder, hero, hoagie, Italian sandwich, po'boy, sub, torpedo


submarined; submarining

Definition of submarine (Entry 3 of 3)

transitive verb

: to attack by or as if by a submarine : attack from beneath

intransitive verb

: to dive or slide under something

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Synonyms for submarine

Synonyms: Adjective

Synonyms: Noun

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Examples of submarine in a Sentence

Adjective the submarine fossils that are to be found in coral reefs Noun always orders a roast beef submarine with the works
Recent Examples on the Web: Adjective Mine warfare, surveillance and reconnaissance, and anti-submarine surface and underwater vehicles, complete with weapons capabilities, are part of the Navy’s future fleet vision, one that will increase flexibility and extend reach at a lower cost. Abraham Mahshie, Washington Examiner, "Navy aims to integrate unmanned vehicles into carrier strike groups by mid-2020s," 23 June 2020 In the past two months, the People's Liberation Army has moved advanced anti-submarine warfare and reconnaissance aircraft to Fiery Cross Reef, known as Kagitingan in the Philippines, in the Spratly Islands chain. Brad Lendon, CNN, "Philippines says it won't end US military access agreement amid South China Sea tensions," 3 June 2020 The Navy’s attack submarine force included 51 submarines at the end of the 2018 budget year. Stephen Singer,, "Congressional report: Electric Boat could run into production delays and supply chain pressures as it ramps up submarine production," 26 Sep. 2019 The entire Shatsky Rise is also covered in those telltale magnetic stripes, which implies that oceanic plateaus themselves are not submarine versions of continental flood basalts, and they aren’t driven by mantle plumes. Robin George Andrews, National Geographic, "This is now the world's largest volcano, geologists say," 15 July 2019 Recent Examples on the Web: Noun To meet state requirements and help limit the spread of COVID-19, the museum plans to have timed entry admissions, heightened cleaning guidelines, and limit the number of people who visit the exhibit and submarine, according to the release. oregonlive, "Oregon Museum of Science and Industry to partially reopen June 20 with science exhibit, submarine tours," 17 June 2020 There were huge tsunamis, submarine landslides, widespread wildfires, and likely insufficient sunlight to sustain photosynthesis after the asteroid hit, for example. Scott K. Johnson, Ars Technica, "Did huge eruptions actually help during the end-Cretaceous extinction?," 1 July 2020 Its shipyards are responsible for the bulk of the nation’s nuclear submarines, including the forthcoming Columbia-class ballistic missile submarine, a key cog in the U.S. military’s nuclear deterrence strategy. Dallas News, "Motley Fool: General Dynamics has underperformed but looks better long-term," 28 June 2020 This allowed users to determine their position by measuring the Doppler shift of the satellites’ signals and in turn was used to track nuclear submarine locations. Larry Printz, Ars Technica, "The long, winding, technological road to GPS in every car," 24 June 2020 But the submarine style has allowed Reinoehl an avenue, at least. Kyle Neddenriep, The Indianapolis Star, "He's not throwing 95. But Franklin College pitcher raises profile with sidearm delivery," 22 June 2020 Navy submarine base might relish a new step in relaxing coronavirus shutdowns: Starting Tuesday, local restaurants can deliver to the base again. USA TODAY, "Trump going Fourth, college refunds, parks shuttered: News from around our 50 states," 22 June 2020 The job of powering the global internet rests on a complex network of more than 400 submarine cables that ferry reams of data around the world at high speed, 24/7. Mary Hui, Quartz, "An undersea internet cable is the latest snag in US-China tensions over Hong Kong," 19 June 2020 They're assumed to have a nuclear triad [nuclear weapons delivery capacity from land, submarine and aircraft]. Pamela Falk, CBS News, "U.S. "not going to allow Russia and China to continue" increasing nuclear weapons stockpile, top negotiator says," 19 June 2020 Recent Examples on the Web: Verb An ankle injury took him out of the rotation for the crucial and crippling January that submarined his junior season. Zach Osterman, Indianapolis Star, "IU basketball player review: Injuries altered De'Ron Davis' once-promising Hoosiers career," 24 Mar. 2020 Or whether the Coronavirus is an instrument designed by the radical left to submarine a presidential re-election campaign? Shawn Windsor, Detroit Free Press, "Garth Brooks, Barry Sanders and the viral spread of ignorance," 29 Feb. 2020 Miller’s second season in charge was submarined by health issues across his roster. Zach Osterman, Indianapolis Star, "For first time in nearly 2 years, IU basketball finally has all scholarship players available," 12 Dec. 2019 Against Texas Tech, the lack of depth finally submarined them. Shawn Windsor, Detroit Free Press, "Does Joshua Langford's injury change Michigan State's NCAA title hopes? Let's examine," 23 Oct. 2019 The Hawkeyes’ offense is lagging way behind though, and that inconsistency is threatening to submarine their season. Luke Meredith, San Diego Union-Tribune, "No. 23 Iowa holds off Purdue 26-20," 19 Oct. 2019 But what about the bullpen that came perilously close to submarining their World Series run last season? Jon Tayler,, "The Houston Astros Are Only Getting Better," 19 June 2018 Waiters and Wall, like Thomas, were submarined by injuries, while Smith and Dunn are young guards still trying to establish themselves in the league. Ben Golliver,, "Isaiah Thomas’s Nightmare Contract Year Sputters to a Close With Season-Ending Surgery," 28 Mar. 2018 This is submarining, or peacing out and then popping back up like a submarine resurfacing from underwater. De Elizabeth, Allure, "9 Annoying Dating Trends Every Modern Romantic Needs to Know," 22 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'submarine.' 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 submarine


1648, in the meaning defined above


1703, in the meaning defined at sense 1


1905, in the meaning defined at transitive sense

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Time Traveler for submarine

Time Traveler

The first known use of submarine was in 1648

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Statistics for submarine

Last Updated

27 Jun 2020

Cite this Entry

“Submarine.” Dictionary, Merriam-Webster, Accessed 13 Aug. 2020.

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More Definitions for submarine


How to pronounce submarine (audio)

English Language Learners Definition of submarine

 (Entry 1 of 2)

technical : located below the surface of the water : ,



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

: a ship that can operate underwater


sub·​ma·​rine | \ ˈsəb-mə-ˌrēn How to pronounce submarine (audio) , ˌsəb-mə-ˈrēn \

Kids Definition of submarine

: a naval ship designed to operate underwater

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