submarine

adjective
sub·​ma·​rine | \ ˈsəb-mə-ˌrēn , ˌsəb-mə-ˈrēn\

Definition of submarine

 (Entry 1 of 3)

: underwater especially : undersea submarine plants submarine minerals

submarine

noun

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

submarine

verb
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

Keep scrolling for more

Synonyms for submarine

Synonyms: Adjective

aquatic, submerged, sunken, underwater

Synonyms: Noun

Cuban sandwich, grinder, hero, hoagie (also hoagy), Italian sandwich, poʼboy (also poor boy), sub, torpedo

Visit the Thesaurus for More 

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: Noun

Nuclear missile submarines had their share of drawbacks. Kyle Mizokami, Popular Mechanics, "Does America Still Need the Nuclear Triad?," 23 Jan. 2019 For a once-in-a-lifetime experience, Substation Curaçao offers mini-submarine tours traveling up to 1,000 feet below the surface of the sea, where coral, fish, and shipwrecks can be spotted (and eventually, sunlight all but disappears). Kaitlin Menza, Town & Country, "The Best Things to Do, Eat, and See in Curaçao," 8 Jan. 2019 Not even a week after his engineers and child-sized submarine were sent, but not ultimately used, to help rescue a dozen boys in a cave in Thailand, the Tesla and SpaceX CEO has now pledged to fund clean water for some homes in Flint, Michigan. Rebecca Bratek, CBS News, "Elon Musk pledges to fund fixing water in Flint homes with lead contamination," 12 July 2018 Musk’s submarine had been tested at a pool near SpaceX’s southern California headquarters. Hallie Detrick, Fortune, "Elon Musk Is Leaving His Unused 'Kid-Sized Submarine' at the Site of the Trapped Thai Soccer Team," 11 July 2018 As part of their everyday functions, cell phones regularly transmit data to nearby cell towers, like submarines using sonar to navigate the ocean depths. Matt Ford, The New Republic, "The Supreme Court Cares About Your Digital Privacy," 22 June 2018 Ohio State employment records reviewed by The Associated Press indicate Richard Strauss worked at five schools in the decade between leaving the Navy as a submarine medicine instructor and joining the university in Columbus in 1978. Kantele Franko And Collin Binkley, chicagotribune.com, "Other universities mum on ties to doctor in Ohio State sex abuse inquiry," 21 June 2018 The team's solution was to develop a child-sized submarine that could keep the children safe as experienced divers guided it through the long and dangerous passage out of the cave. Megan Geuss, Ars Technica, "Musk lawyers move to dismiss cave explorer lawsuit over “pedo guy” tweets," 27 Dec. 2018 The video shows divers removing Naval Strike Missiles, still in their rectangular containers, as well as the ship’s anti-submarine torpedoes. Kyle Mizokami, Popular Mechanics, "Watch Underwater Footage from Helge Ingstad—Norway’s Newest Submarine," 19 Dec. 2018

Recent Examples on the Web: Verb

But what about the bullpen that came perilously close to submarining their World Series run last season? Jon Tayler, SI.com, "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, SI.com, "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 Just when hopeless romantics thought that mind-boggling dating trends like submarining and stashing were left behind in 2017, a new woe has bubbled up to vex sincere sentiments everywhere: mosting. Janine Puhak, Fox News, "'Mosting' is the latest maddening dating trend," 20 Mar. 2018 The Pelicans went into this year's All-Star Break on a three-game winning streak, in the hopes of jump-starting a campaign that looked to be submarined when DeMarcus Cousins went down with an Achilles injury. Clyde Verdin, NOLA.com, "Anthony Davis plots his future, with and without the Pelicans," 21 Feb. 2018 That team submarined itself to 37 wins under the bulk of its own malaise. Rob Mahoney, SI.com, "The Pistons Are Making the Most of a Clean Slate," 31 Oct. 2017 Still, the Suns submarined them with three consecutive blowout losses, each as lifeless as the next. Rob Mahoney, SI.com, "The 12 Biggest Surprises of the NBA Season So Far," 23 Oct. 2017 Twenty-three bodies may still be inside the sunken remains of a World War I submarine found off the coast of Belgium. Sarah Gibbens, National Geographic, "See the WWI Submarine Discovered Off the Coast of Belgium," 22 Sep. 2017

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.

See More

First Known Use of submarine

Adjective

1648, in the meaning defined above

Noun

1703, in the meaning defined at sense 1

Verb

1905, in the meaning defined at transitive sense

Keep scrolling for more

Learn More about submarine

Statistics for submarine

Look-up Popularity

Time Traveler for submarine

The first known use of submarine was in 1648

See more words from the same year

Keep scrolling for more

More Definitions for submarine

submarine

adjective

English Language Learners Definition of submarine

 (Entry 1 of 2)

technical : located below the surface of the water : ,

submarine

noun

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

: a ship that can operate underwater

submarine

noun
sub·​ma·​rine | \ ˈsəb-mə-ˌrēn , ˌsəb-mə-ˈrēn\

Kids Definition of submarine

: a naval ship designed to operate underwater

Keep scrolling for more

Comments on submarine

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

WORD OF THE DAY

very full or close together

Get Word of the Day daily email!

Test Your Vocabulary

What did you just call me?! A Quiz

  • rows-of-various-emoji
  • If a member of the audience describes your speech as bombastic, does that person mean it is:
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!