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We found 73 dictionaries with English definitions that include the word radiation:
Click on the first link on a line below to go directly to a page where "radiation" is defined.

General dictionaries General (30 matching dictionaries)
  1. radiation: Merriam-Webster.com [home, info]
  2. radiation: Oxford Learner's Dictionaries [home, info]
  3. radiation: American Heritage Dictionary of the English Language [home, info]
  4. radiation: Collins English Dictionary [home, info]
  5. radiation: Vocabulary.com [home, info]
  6. radiation: Macmillan Dictionary [home, info]
  7. Radiation, radiation: Wordnik [home, info]
  8. radiation: Cambridge Advanced Learner's Dictionary [home, info]
  9. radiation: Wiktionary [home, info]
  10. radiation: Webster's New World College Dictionary, 4th Ed. [home, info]
  11. radiation: The Wordsmyth English Dictionary-Thesaurus [home, info]
  12. radiation: Infoplease Dictionary [home, info]
  13. radiation: Dictionary.com [home, info]
  14. radiation: Online Etymology Dictionary [home, info]
  15. radiation: UltraLingua English Dictionary [home, info]
  16. radiation: Cambridge Dictionary of American English [home, info]
  17. Radiation (EP), Radiation (Marillion album), Radiation (album), Radiation (biology), Radiation (disambiguation), Radiation (evolution), Radiation (medicine), Radiation (pain), Radiation: Wikipedia, the Free Encyclopedia [home, info]
  18. Radiation: Online Plain Text English Dictionary [home, info]
  19. radiation: Webster's Revised Unabridged, 1913 Edition [home, info]
  20. radiation: Rhymezone [home, info]
  21. radiation: AllWords.com Multi-Lingual Dictionary [home, info]
  22. radiation: Webster's 1828 Dictionary [home, info]
  23. Radiation: Encarta® Online Encyclopedia, North American Edition [home, info]
  24. radiation: Free Dictionary [home, info]
  25. radiation: Mnemonic Dictionary [home, info]
  26. radiation: WordNet 1.7 Vocabulary Helper [home, info]
  27. radiation: LookWAYup Translating Dictionary/Thesaurus [home, info]
  28. radiation: Dictionary/thesaurus [home, info]

Business dictionaries Business (2 matching dictionaries)
  1. Radiation: Energy Dictionary [home, info]
  2. radiation: BusinessDictionary.com [home, info]

Computing dictionaries Computing (2 matching dictionaries)
  1. Radiation: Cybernetics and Systems [home, info]
  2. radiation: Encyclopedia [home, info]

Medicine dictionaries Medicine (10 matching dictionaries)
  1. Radiation: MedTerms.com Medical Dictionary [home, info]
  2. Radiation: Medical Dictionary [home, info]
  3. Radiation: Merck Manuals [home, info]
  4. radiation: online medical dictionary [home, info]
  5. radiation: Prostate Cancer Interactive Glossary [home, info]
  6. radiation: Dictionary of Cancer Terms [home, info]
  7. radiation: Parents' Common Sense Encyclopedia [home, info]
  8. radiation: Medical dictionary [home, info]
  9. Radiation: Drug Medical Dictionary [home, info]
  10. radiation: Hyperdictionary [home, info]

Miscellaneous dictionaries Miscellaneous (1 matching dictionary)
  1. radiation: Encyclopedia of Graphic Symbols [home, info]

Science dictionaries Science (14 matching dictionaries)
  1. Radiation: From Stargazers to Starships Glossary [home, info]
  2. Radiation: Solar Radiation Resource Terms [home, info]
  3. radiation: Environmental Terminology Discovery Service [home, info]
  4. Radiation: Eric Weisstein's World of Physics [home, info]
  5. radiation: Imagine the Universe! Dictionary [home, info]
  6. radiation: On-Line Biology Book: GLOSSARY [home, info]
  7. Radiation: Extragalactic Astronomy [home, info]
  8. Radiation: Fishkeeping glossary [home, info]
  9. radiation: UNCChem Glossary [home, info]
  10. Radiation: Accelerator Glossary [home, info]
  11. radiation: Natural History Terms [home, info]
  12. Radiation: Geography Dictionary [home, info]
  13. RADIATION: Weather Glossary [home, info]

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

Tech dictionaries Tech (13 matching dictionaries)
  1. radiation: Webster's New World Telecom Dictionary [home, info]
  2. radiation: High-Energy Astrophysics [home, info]
  3. Radiation: AUTOMOTIVE TERMS [home, info]
  4. Radiation: Efficient Windows [home, info]
  5. RADIATION: Energy Terms [home, info]
  6. radiation: Glossary of Meteorology [home, info]
  7. RADIATION: Glossary of Common Hearth and Heating Terms [home, info]
  8. Radiation: Explosives [home, info]
  9. Radiation: Construction Glossary [home, info]
  10. Radiation: National Weather Service Glossary [home, info]
  11. Radiation: Glossary of Energy Terms [home, info]
  12. RADIATION: Power Engineering [home, info]
  13. Radiation: Nuclear Terms [home, info]

(Note: See radiative for more definitions.)

Quick definitions from Macmillan (
American English Definition British English Definition

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Quick definitions from WordNet (radiation)

noun:  the act of spreading outward from a central source
noun:  a radial arrangement of nerve fibers connecting different parts of the brain
noun:  the spread of a group of organisms into new habitats
noun:  energy that is radiated or transmitted in the form of rays or waves or particles
noun:  the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
noun:  (medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
noun:  syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours ("He was suffering from radiation")

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Phrases that include radiation:   electromagnetic radiation, radiation therapy, radiation sickness, adaptive radiation, gamma radiation, more...

Words similar to radiation:   radiational, radiationless, radiative, more...

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