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We found 45 dictionaries with English definitions that include the word fission:
Click on the first link on a line below to go directly to a page where "fission" is defined.

General dictionaries General (30 matching dictionaries)
  1. fission: Merriam-Webster.com [home, info]
  2. fission: Oxford Dictionaries [home, info]
  3. fission: American Heritage Dictionary of the English Language [home, info]
  4. fission: Collins English Dictionary [home, info]
  5. fission: Vocabulary.com [home, info]
  6. fission: Macmillan Dictionary [home, info]
  7. Fission, fission: Wordnik [home, info]
  8. fission: Cambridge Advanced Learner's Dictionary [home, info]
  9. fission: Wiktionary [home, info]
  10. fission: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. fission: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. fission: Infoplease Dictionary [home, info]
  13. fission: Dictionary.com [home, info]
  14. fission: Online Etymology Dictionary [home, info]
  15. fission: UltraLingua English Dictionary [home, info]
  16. fission: Cambridge Dictionary of American English [home, info]
  17. Fission (album), Fission (band), Fission (biology), Fission (disambiguation), Fission: Wikipedia, the Free Encyclopedia [home, info]
  18. Fission: Online Plain Text English Dictionary [home, info]
  19. fission: Webster's Revised Unabridged, 1913 Edition [home, info]
  20. fission: Rhymezone [home, info]
  21. Fission: AllWords.com Multi-Lingual Dictionary [home, info]
  22. fission: Hutchinson's Dictionary of Difficult Words [home, info]
  23. fission: Free Dictionary [home, info]
  24. fission: Hutchinson Dictionaries [home, info]
  25. fission: Mnemonic Dictionary [home, info]
  26. fission: WordNet 1.7 Vocabulary Helper [home, info]
  27. fission: LookWAYup Translating Dictionary/Thesaurus [home, info]
  28. fission: Dictionary/thesaurus [home, info]

Business dictionaries Business (2 matching dictionaries)
  1. Fission: Energy Dictionary [home, info]
  2. fission: Legal dictionary [home, info]

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

Medicine dictionaries Medicine (2 matching dictionaries)
  1. fission: online medical dictionary [home, info]
  2. fission: Medical dictionary [home, info]

Science dictionaries Science (7 matching dictionaries)
  1. Fission: Eric Weisstein's World of Physics [home, info]
  2. Fission: Extragalactic Astronomy [home, info]
  3. fission: General Chemistry Online [home, info]
  4. Fission (fissioning): NRC Glossary of Nuclear Terms -- [home, info]
  5. fission: Natural History Terms [home, info]
  6. FISSION: Zoom Astronomy Glossary [home, info]

Tech dictionaries Tech (3 matching dictionaries)
  1. fission: NATURAL RESOURCES DEFENSE COUNCIL [home, info]
  2. FISSION: Energy Terms [home, info]
  3. Fission: Nuclear Terms [home, info]

(Note: See fissions for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (fission)

noun:  a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
noun:  reproduction of some unicellular organisms by division of the cell into two more or less equal parts

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Phrases that include fission:   multiple fission, fission product, fission track dating, fission fungi, fast fission, more...

Words similar to fission:   fissional, nuclear fission, more...

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