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We found 80 dictionaries with English definitions that include the word ion:
Click on the first link on a line below to go directly to a page where "ion" is defined.

General (33 matching dictionaries)

1. Ion, -ion, ion: Merriam-Webster.com [home, info]
2. Ion, -ion, ion: Oxford Learner's Dictionaries [home, info]
3. Ion, ion: American Heritage Dictionary of the English Language [home, info]
4. -ion, ion: Collins English Dictionary [home, info]
5. ion: Vocabulary.com [home, info]
6. ion: Macmillan Dictionary [home, info]
7. Ion, -ion, ion, iOn: Wordnik [home, info]
8. -ion, ion: Cambridge Advanced Learner's Dictionary [home, info]
9. Ion, -ion, ion: Wiktionary [home, info]
10. -ion, ion: Webster's New World College Dictionary, 4th Ed. [home, info]
11. -ion, ion: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. ion: Infoplease Dictionary [home, info]
13. ION, Ion, -ion: Dictionary.com [home, info]
14. ion: Online Etymology Dictionary [home, info]
15. ion: UltraLingua English Dictionary [home, info]
16. ion: Cambridge Dictionary of American English [home, info]
17. I.O.N, I.O.N (manga), ION (satellite), ION, Ion (DC Comics), Ion (Greece), Ion (chocolate), Ion (comics), Ion (dialogue), Ion (disambiguation), Ion (mythology), Ion (name), Ion (paintball marker), Ion (physics), Ion (play), Ion (rapper), Ion (serialization format), Ion (window manager), Ion: Wikipedia, the Free Encyclopedia [home, info]
18. Ion, -ion: Online Plain Text English Dictionary [home, info]
19. ion: Webster's Revised Unabridged, 1913 Edition [home, info]
20. ion: Rhymezone [home, info]
21. Ion: AllWords.com Multi-Lingual Dictionary [home, info]
22. -ion, ion: MyWord.info [home, info]
23. Ion, ion: Stammtisch Beau Fleuve Acronyms [home, info]
24. ion: Hutchinson's Dictionary of Difficult Words [home, info]
25. Ion: 1911 edition of the Encyclopedia Britannica [home, info]
26. ion: Free Dictionary [home, info]
27. ion: Hutchinson Dictionaries [home, info]
28. ion: Mnemonic Dictionary [home, info]
29. ion: WordNet 1.7 Vocabulary Helper [home, info]
30. Ion, ion: LookWAYup Translating Dictionary/Thesaurus [home, info]
31. Ion, ion: Dictionary/thesaurus [home, info]

Business (2 matching dictionaries)

32. Ion: Construction Term Glossary [home, info]
33. ion: BusinessDictionary.com [home, info]

Computing (2 matching dictionaries)

34. ION: Netlingo [home, info]
35. Ion (chemistry), Ion (physics), Ion (prophet), ion: Encyclopedia [home, info]

Medicine (8 matching dictionaries)

36. Ion: MedFriendly Glossary [home, info]
37. ion: online medical dictionary [home, info]
38. Ion: Hepatitis C Information Central [home, info]
39. ion: Medical Device Glossary of Terms [home, info]
40. ion: DICTIONARY OF TERMS IN ORAL PHYSIOLOGY [home, info]
41. ion: Dictionary of Cancer Terms [home, info]
42. Ion (chemistry), Ion (physics), -ion, ion: Medical dictionary [home, info]
43. Ion: WeMove Glossary of Terms [home, info]

Miscellaneous (3 matching dictionaries)

44. ION: Acronym Finder [home, info]
45. ION: Three Letter Words with definitions [home, info]
46. ION: AbbreviationZ [home, info]

Science (17 matching dictionaries)

47. ion: Dictionary of Botanical Epithets [home, info]
48. ion: Electrochemistry Dictionary [home, info]
49. Ion: From Stargazers to Starships Glossary [home, info]
50. Ion: Chemistry Dictionary [home, info]
51. Ion: Drug Discovery and Development [home, info]
52. Ion: Biology dictionary [home, info]
53. Ion: Eric Weisstein's World of Chemistry [home, info]
54. Ion: Eric Weisstein's World of Physics [home, info]
55. Ion: Extragalactic Astronomy [home, info]
56. ion: General Chemistry Online [home, info]
57. ion-: Glossary of Roots of Botanical Names [home, info]
58. Ion: NRC Glossary of Nuclear Terms -- [home, info]
59. Ion: Accelerator Glossary [home, info]
60. ion: Natural History Terms [home, info]
61. Ion: AGRICULTURAL AND ENVIRONMENTAL BIOTECHNOLOGY [home, info]
62. ION: Zoom Astronomy Glossary [home, info]

Slang (1 matching dictionary)

64. ion: Urban Dictionary [home, info]

Tech (14 matching dictionaries)

65. ION: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info]
66. ion: Electronics [home, info]
67. Ion: AUTOMOTIVE TERMS [home, info]
68. Ion: Basics of Space Flight Glossary [home, info]
69. ION: Energy Terms [home, info]
70. Ion: Gems and Precious Stones [home, info]
71. ion: Glossary of Meteorology [home, info]
72. Ion: Explosives [home, info]
73. ion: Canadian Soil Information System [home, info]
74. ION: Lake and Water Word Glossary [home, info]
75. Ion: Glossary of Energy Terms [home, info]
76. ION: Power Engineering [home, info]
77. Ion: Nuclear Terms [home, info]
78. ion: Webster's New World Telecom Dictionary [home, info]

(Note: See ions for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (ion) ▸ noun:  a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons ▸ name:  A surname (very rare: popularity rank in the U.S.: #31793) ▸ Also see ions ▸ Word origin ▸ Words similar to ion ▸ Usage examples for ion ▸ Idioms related to ion (New!) ▸ Popular adjectives describing ion ▸ Words that often appear near ion ▸ Rhymes of ion ▸ Invented words related to ion