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We found 34 dictionaries with English definitions that include the word porthole:
Click on the first link on a line below to go directly to a page where "porthole" is defined.

General dictionaries General (29 matching dictionaries)
  1. porthole: Merriam-Webster.com [home, info]
  2. porthole: Oxford Learner's Dictionaries [home, info]
  3. porthole: American Heritage Dictionary of the English Language [home, info]
  4. porthole: Collins English Dictionary [home, info]
  5. porthole: Vocabulary.com [home, info]
  6. porthole: Macmillan Dictionary [home, info]
  7. Porthole, porthole: Wordnik [home, info]
  8. porthole: Cambridge Advanced Learner's Dictionary [home, info]
  9. Porthole, Porthole: InfoVisual Visual Dictionary [home, info]
  10. porthole: Wiktionary [home, info]
  11. porthole: Webster's New World College Dictionary, 4th Ed. [home, info]
  12. porthole: The Wordsmyth English Dictionary-Thesaurus [home, info]
  13. porthole: Infoplease Dictionary [home, info]
  14. Porthole, porthole: Dictionary.com [home, info]
  15. porthole: Online Etymology Dictionary [home, info]
  16. porthole: UltraLingua English Dictionary [home, info]
  17. porthole: Cambridge Dictionary of American English [home, info]
  18. Porthole: Wikipedia, the Free Encyclopedia [home, info]
  19. Porthole: Online Plain Text English Dictionary [home, info]
  20. porthole: Webster's Revised Unabridged, 1913 Edition [home, info]
  21. porthole: Rhymezone [home, info]
  22. porthole: AllWords.com Multi-Lingual Dictionary [home, info]
  23. porthole: Free Dictionary [home, info]
  24. porthole: Mnemonic Dictionary [home, info]
  25. porthole: WordNet 1.7 Vocabulary Helper [home, info]
  26. porthole: LookWAYup Translating Dictionary/Thesaurus [home, info]
  27. porthole: Dictionary/thesaurus [home, info]

Business dictionaries Business (1 matching dictionary)
  1. porthole: Travel Industry Dictionary [home, info]

Computing dictionaries Computing (1 matching dictionary)
  1. porthole: Encyclopedia [home, info]

Slang dictionaries Slang (1 matching dictionary)
  1. porthole: Urban Dictionary [home, info]

Tech dictionaries Tech (2 matching dictionaries)
  1. Porthole: AUTOMOTIVE TERMS [home, info]
  2. porthole: SeaTalk Dictionary of English Nautical Language [home, info]

(Note: See portholes for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (porthole)

noun:  a window in a ship or airplane
noun:  an opening (in a wall or ship or armored vehicle) for firing through

▸ Also see portholes
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Phrases that include porthole:   porthole die, observation porthole more...

Words similar to porthole:   embrasure, port, more...

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