We found 47 dictionaries that define the word magnesium:

General (26 matching dictionaries)

1. magnesium: Longman Dictionary of Contemporary English
2. magnesium: Merriam-Webster
3. magnesium: Oxford Learner's Dictionaries
4. magnesium: American Heritage Dictionary of the English Language
5. magnesium: Collins English Dictionary
6. magnesium: Vocabulary.com
7. Magnesium, magnesium: Wordnik
8. magnesium: Cambridge Advanced Learner's Dictionary
9. magnesium: Wiktionary
10. magnesium: Webster's New World College Dictionary, 4th Ed.
11. magnesium: The Wordsmyth English Dictionary-Thesaurus
12. magnesium: Infoplease Dictionary
13. magnesium: Dictionary.com
14. magnesium: Cambridge Essential American English Dictionary
15. Magnesium (medical use), Magnesium (pharmaceutical preparation), Magnesium: Wikipedia, the Free Encyclopedia
16. Magnesium: Online Plain Text English Dictionary
17. magnesium: Webster's Revised Unabridged, 1913 Edition
18. magnesium: Rhymezone
19. Magnesium: AllWords.com Multi-Lingual Dictionary
20. magnesium: Webster's 1828 Dictionary
21. magnesium: FreeDictionary.org
22. magnesium: Mnemonic Dictionary
23. magnesium: TheFreeDictionary.com
24. magnesium: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

25. magnesium: Financial dictionary

Computing (1 matching dictionary)

26. magnesium: Encyclopedia

Medicine (11 matching dictionaries)

27. magnesium: Merriam-Webster Medical Dictionary
28. Dorland's Illustrated Medical Dictionary (No longer online)
29. Magnesium: MedTerms.com Medical Dictionary
30. Medical Dictionary (No longer online)
31. Magnesium: Merck Manuals
32. online medical dictionary (No longer online)
33. Hepatitis C Information Central (No longer online)
34. Magnesium: Glossary of Herbs, Botanicals and Other Products
35. magnesium: Dictionary of Cancer Terms
36. magnesium: Medical dictionary
37. Magnesium: Drug Medical Dictionary

Miscellaneous (1 matching dictionary)

38. Encyclopedia of Graphic Symbols (No longer online)

Science (2 matching dictionaries)

39. Magnesium: Extragalactic Astronomy
40. Magnesium, magnesium: WebElements Periodic Table of the Elements

Sports (1 matching dictionary)

41. Magnesium: Body Building

Tech (4 matching dictionaries)

42. Metal Terminology (No longer online)
43. Explosives (No longer online)
44. Pool Glossary (No longer online)
45. MAGNESIUM: Power Engineering

(Note: See magnesiums as well.)

Definitions from Wiktionary ( ) ▸ noun:  The chemical element (symbol Mg) with an atomic number of 12. It is a light, easily flammable, silvery-white alkaline earth metal. Similar: MG, atomic number 12, calcium, sodium, manganese, molybdenum, magnelium, caesium, magnesium oxide, aluminium, more... Opposite: calcium, iron, zinc, copper, potassium Types: magnesium oxide, magnesium chloride, magnesium sulfate, magnesium carbonate, magnesium hydroxide, more... Phrases: magnesium sulfate, magnesium oxide, magnesium chloride, Magnesium deficiency, magnesium hydroxide, more... Adjectives: metallic, pure, calcium, low, more, high, total, dietary, excess, intracellular, intravenous Colors:     silver,     gray,     white,     light gray,     metallic silver, more... ▸ Words similar to magnesium ▸ Usage examples for magnesium ▸ Idioms related to magnesium ▸ Wikipedia articles (New!) ▸ Popular adjectives describing magnesium ▸ Words that often appear near magnesium ▸ Rhymes of magnesium ▸ Invented words related to magnesium