We found 35 dictionaries that define the word electromagnetic radiation:

General (12 matching dictionaries)

1. electromagnetic radiation: Merriam-Webster
2. electromagnetic radiation: Oxford Learner's Dictionaries
3. electromagnetic radiation: Collins English Dictionary
4. electromagnetic radiation: Vocabulary.com
5. electromagnetic radiation: Wiktionary
6. electromagnetic radiation: Infoplease Dictionary
7. electromagnetic radiation: Dictionary.com
8. Electromagnetic radiation: Wikipedia, the Free Encyclopedia
9. electromagnetic radiation: Rhymezone
10. electromagnetic radiation: FreeDictionary.org
11. electromagnetic radiation: Mnemonic Dictionary
12. electromagnetic radiation: TheFreeDictionary.com

Art (1 matching dictionary)

13. English-Chinese Dictionary of Graphic Communications (Big 5) (No longer online)

Business (2 matching dictionaries)

14. electromagnetic radiation: Legal dictionary
15. BusinessDictionary.com (No longer online)

Computing (2 matching dictionaries)

16. electromagnetic radiation: CCI Computer
17. electromagnetic radiation: Encyclopedia

Medicine (5 matching dictionaries)

18. electromagnetic radiation: Merriam-Webster Medical Dictionary
19. Dorland's Illustrated Medical Dictionary (No longer online)
20. online medical dictionary (No longer online)
21. electromagnetic radiation: Dictionary of Cancer Terms
22. electromagnetic radiation: Medical dictionary

Science (7 matching dictionaries)

23. Chemistry Dictionary (No longer online)
24. Electromagnetic Radiation: Solar Radiation Resource Terms
25. Electromagnetic Radiation: Eric Weisstein's World of Physics
26. Electromagnetic Radiation: Extragalactic Astronomy
27. General Chemistry Online (No longer online)
28. Electromagnetic radiation: NRC Glossary of Nuclear Terms --
29. Weather Glossary (No longer online)

Tech (6 matching dictionaries)

30. DOD Dictionary of Military Terms (No longer online)
31. Glossary of Meteorology (No longer online)
32. Explosives (No longer online)
33. JPL Terms (No longer online)
34. PhotoNotes Dictionary of Film and Digital Photography (No longer online)
35. Space and Electronic Warfare Lexicon (No longer online)

(Note: See electromagnetic_radiations as well.)

Definitions from Wiktionary (electromagnetic radiation) ▸ noun:  Radiation (quantized as photons) consisting of oscillating electric and magnetic fields oriented perpendicularly to each other, moving through space. Similar: electromagnetic wave, radio energy, radiant energy, radioelectricity, electromagnetic energy, gamma radiation, X-ray radiation, electromagnetic force, thermal radiation, undulation, more... Opposite: matter, particles, substance Types: radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, gammrays, more... Phrases: control of electromagnetic radiation, electromagnetic radiation hazards, scattering of electromagnetic radiation, Electromagnetic radiation and health, more... Adjectives: gray, coulombic, beta, hole, x-ray, jet, fringing, magnetomotive, rad, downfield, potential ▸ Words similar to electromagnetic radiation ▸ Usage examples for electromagnetic radiation ▸ Idioms related to electromagnetic radiation ▸ Wikipedia articles (New!) ▸ Words that often appear near electromagnetic radiation ▸ Rhymes of electromagnetic radiation ▸ Invented words related to electromagnetic radiation