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 Singapore hosts rotational deployments of US Navy littoral combat ships and P-8 Poseidon anti-submarine warfare aircraft. Brad Lendon, CNN, 27 July 2021 China's aerial task force included 14 J-16 fighter jets; six J-11 fighters; four H-6 bombers; two KJ-500 airborne early warning and control planes; one Y-8 electronic warfare aircraft; and one Y-8 anti-submarine warfare aircraft. Kyle Mizokami, Popular Mechanics, 21 June 2021 The Navy optimized the Virginias for land-attack missions with Tomahawk cruise missiles, at the expense of their anti-submarine capabilities. David Axe, Forbes, 29 June 2021 The latest Chinese mission involved 14 J-16 and six J-11 fighters, as well as four H-6 bombers, which can carry nuclear weapons, and anti-submarine, electronic warfare and early warning aircraft, Taiwan's Defense Ministry said. NBC News, 16 June 2021 Anderson is a submarine-style hurler, nearly grazing the mound on each delivery and just barely hitting 80 mph on his heater. Mitchell Gladstone, Arkansas Online, 30 May 2021 In wartime, the subs would hide under the ice from NATO anti-submarine forces. Kyle Mizokami, Popular Mechanics, 30 Mar. 2021 Each ship has a limited number of silos capable of carrying a mix of anti-air, anti-ship, land-attack, and anti-submarine missiles. Kyle Mizokami, Popular Mechanics, 28 Apr. 2021 In focused missions, the LCS will employ reconfigurable weapons modules tailored to specific tasks such as anti-submarine warfare (ASW) and countering boat attacks like the Cole episode. Jim Wilson, Popular Mechanics, 22 Apr. 2021 Recent Examples on the Web: Noun The veterans group is open to submarine crew qualified to wear the warfare specialty pin, the dolphins (Silver or Gold). Linda Mcintosh, San Diego Union-Tribune, 23 June 2021 The latest version of the submarine has the new Virginia Payload Module; in addition to the basic 12 cruise missile launch tubes, the VPM caries and launches up to 28 additional cruise missiles. David Hambling, Forbes, 2 June 2021 Even those bad hunches are illuminating, though: Berkeley’s neural-net system was able to discern that something unusual was going on with a question-mark clue, even if it got stuck on the wrong kind of submarine. Ben Zimmer, Wired, 6 May 2021 Video widely circulated on Monday shows the crew of an Indonesian submarine singing a farewell song weeks before the vessel was destroyed. Haley Victory Smith, Washington Examiner, 27 Apr. 2021 The disappearance of an Indonesian submarine off the resort island of Bali follows dozens of other disasters in the depths of the world's vast seas. David Keyton, Star Tribune, 23 Apr. 2021 An Indonesian naval vessel has detected an object within the search range of the submarine, but officials aren't sure what the object is yet. Aj Willingham, CNN, 23 Apr. 2021 The onus is on the submarine crew to detect and avoid a commercial ship first. Kyle Mizokami, Popular Mechanics, 9 Feb. 2021 The last project with which she was affiliated was the Seawolf-class submarine (SSN-21). Arkansas Online, 5 July 2021 Recent Examples on the Web: Verb There was a lot of talk last week about whether Michigan might submarine Ohio State, which badly needs to play that rivalry game to qualify for the Big Ten championship game. oregonlive, 6 Dec. 2020 Irving’s mood swings have the potential to submarine a good thing next season in Brooklyn, if things don’t go precisely to plan. Jeff Mcdonald,, 25 Aug. 2020 An ankle injury took him out of the rotation for the crucial and crippling January that submarined his junior season. Zach Osterman, Indianapolis Star, 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, 29 Feb. 2020 Miller’s second season in charge was submarined by health issues across his roster. Zach Osterman, Indianapolis Star, 12 Dec. 2019 Against Texas Tech, the lack of depth finally submarined them. Shawn Windsor, Detroit Free Press, 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, 19 Oct. 2019 But what about the bullpen that came perilously close to submarining their World Series run last season? Jon Tayler,, 19 June 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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Learn More About submarine

Time Traveler for submarine

Time Traveler

The first known use of submarine was in 1648

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Dictionary Entries Near submarine



submarine bell

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Statistics for submarine

Last Updated

3 Aug 2021

Cite this Entry

“Submarine.” Dictionary, Merriam-Webster, Accessed 5 Aug. 2021.

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More Definitions for submarine



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

More from Merriam-Webster on submarine

Nglish: Translation of submarine for Spanish Speakers

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


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