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
: to attack by or as if by a submarine : attack from beneath
: to dive or slide under something
Synonyms
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
Susan Selasky, Detroit Free Press, 16 Oct. 2024
This eruption even gave its name to the style of shallow, submarine basaltic eruptions: Surtseyan.
—Erik Klemetti, Discover Magazine, 11 Nov. 2023
Avivah Wittenberg-Cox, Forbes, 23 Oct. 2024
The submarine is broken into three pieces: the bow, the midship and the stern.
—Sarah Kuta, Smithsonian Magazine, 17 Oct. 2024
Dominique Fluker, Essence, 11 Oct. 2024
The multi-platinum-selling act announced a farewell tour in 2020, after being on the road extensively for 20 years, but it was submarined by covid-19.
—Eric E. Harrison, arkansasonline.com, 1 Oct. 2024
See all Example Sentences for submarine 
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Adjective
Known as an innovator in the grocery business, Violante enhanced the experience at Holiday Market with an in-store bakery, freshly made submarine sandwiches, and beers from around the world, according to his family obituary.
—Susan Selasky, Detroit Free Press, 16 Oct. 2024
This eruption even gave its name to the style of shallow, submarine basaltic eruptions: Surtseyan.
—Erik Klemetti, Discover Magazine, 11 Nov. 2023
Noun
Serving in a submarine means living under water in a steel tube for months at a time - with no breaks.
—Avivah Wittenberg-Cox, Forbes, 23 Oct. 2024
The submarine is broken into three pieces: the bow, the midship and the stern.
—Sarah Kuta, Smithsonian Magazine, 17 Oct. 2024
Verb
Ghosting is a clean break to the relationship, while submarining is a lingering, unhealthy, and toxic connection that just can’t go away.
—Dominique Fluker, Essence, 11 Oct. 2024
The multi-platinum-selling act announced a farewell tour in 2020, after being on the road extensively for 20 years, but it was submarined by covid-19.
—Eric E. Harrison, arkansasonline.com, 1 Oct. 2024
See all Example Sentences for submarine
Articles Related to submarine
Dictionary Entries Near submarine
Cite this Entry
“Submarine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/submarine. Accessed 7 Nov. 2024.
Copy CitationKids Definition
submarine
1 of 2 adjective
sub·ma·rine
ˈsəb-mə-ˌrēn 
ˌsəb-mə-ˈrēn
submarine
2 of 2 noun1
: a naval vessel designed to operate underwater
2
: a large sandwich on a long split roll
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