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sub- +‎ marine.


  • (UK) IPA(key): /sʌb.məˈɹiːn/
  • (file)
  • (US)
    • (noun) IPA(key): /sʌb.məˈɹin/, /ˈsʌb.mə.ɹin/
    • (adjective) IPA(key): /sʌb.məˈɹin/
  • Rhymes: -iːn


submarine (not comparable)

  1. Existing, relating to, or made for use beneath the sea.
    • 1908, Edmund Doidge Anderson Morshead, Four Plays of Aeschylus, Introduction, page xiv:
      [] a Chorus of Sea-nymphs, who [] arrive, in a winged car, from the submarine palace of their father Oceanus.
  2. Hidden or undisclosed.
    a submarine patent
    Synonyms: undersea, subsea
  3. (baseball) Of a pitch, thrown with the hand lower than the elbow.
    • 2005, John McCollister, Tales from the 1979 Pittsburgh Pirates: Remembering "The Fam-A-Lee", →ISBN, page 109:
      When Peterson saw the unusual pitching motion of Kent Tekulve—the submarine pitcher who threw baseballs as though they were coming right out of the rubber slab on the mound—he was the first of many who tried to change Tekulve's delivery.


See also[edit]


A submarine.

submarine (plural submarines)

  1. A boat that can go underwater.
  2. A kind of sandwich made in a long loaf of bread.
  3. (baseball) A pitch delivered with an underhand motion.
  4. Any submarine plant or animal.
  5. (informal) A stowaway on a seagoing vessel.




Related terms[edit]



submarine (third-person singular simple present submarines, present participle submarining, simple past and past participle submarined)

  1. (intransitive) To operate or serve on a submarine.
  2. (transitive) To torpedo; to destroy with a sudden sneak attack.
    • 2007 April 13, The Associated Press, “Shares Up as Investors Ponder Retail Data”, in New York Times[1]:
      “We’re really at the point of chicken, where the Fed is trying to ward off inflation without submarining the economy.”
  3. (intransitive, sometimes figurative) To sink or submerge oneself.
    • 2003, Homer H. Grantham, Thunder in the Morning: A World War II Memoir, page 1:
      The second their center snapped the ball, I submarined between the big guy's legs and tackled the halfback.
    • 2013, Gordon MacDonald, Building Below the Waterline, page 234:
      Ten days later, the full force of what happened crushed me. I submarined into the depths of disillusionment.
  4. (intransitive, automotive) To slide forwards underneath one's seat belt (during a crash or sudden stop).
    The seatback should always be up while driving so that the occupant doesn't submarine and potentially suffer severe internal injury.

Derived terms[edit]

Further reading[edit]






  1. inflection of submarin:
    1. strong/mixed nominative/accusative feminine singular
    2. strong nominative/accusative plural
    3. weak nominative all-gender singular
    4. weak accusative feminine/neuter singular