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We found 69 dictionaries with English definitions that include the word atom:
Click on the first link on a line below to go directly to a page where "atom" is defined.

General (33 matching dictionaries)

1. atom: Merriam-Webster.com [home, info]
2. atom: Oxford Learner's Dictionaries [home, info]
3. atom: American Heritage Dictionary of the English Language [home, info]
4. atom: Collins English Dictionary [home, info]
5. atom: Vocabulary.com [home, info]
6. atom: Macmillan Dictionary [home, info]
7. Atom, Atom, atom: Wordnik [home, info]
8. atom: Cambridge Advanced Learner's Dictionary [home, info]
9. atom: Wiktionary [home, info]
10. atom: Webster's New World College Dictionary, 4th Ed. [home, info]
11. atom: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. atom: Infoplease Dictionary [home, info]
13. atom: Dictionary.com [home, info]
14. atom: Online Etymology Dictionary [home, info]
15. atom: UltraLingua English Dictionary [home, info]
16. atom: Cambridge Dictionary of American English [home, info]
17. A.T.O.M, A.T.O.M. (TV series), ATOM (IFV), ATOM, Atom (Al Pratt), Atom (Asimov book), Atom (DC Comics), Atom (Intel), Atom (Krauss book), Atom (Ray Palmer), Atom (Ryan Choi), Atom (Web standard), Atom (character), Atom (comics), Atom (disambiguation), Atom (measure theory), Atom (order theory), Atom (programming language), Atom (software), Atom (standard), Atom (system on chip), Atom (text editor), Atom (time), Atom (video game), Atom, The Atom (comics), The Atom: Wikipedia, the Free Encyclopedia [home, info]
18. Atom: Online Plain Text English Dictionary [home, info]
19. atom: Webster's Revised Unabridged, 1913 Edition [home, info]
20. atom: Rhymezone [home, info]
21. Atom-, Atom (nt), atom: AllWords.com Multi-Lingual Dictionary [home, info]
22. atom: Webster's 1828 Dictionary [home, info]
23. atom: Hutchinson's Dictionary of Difficult Words [home, info]
24. Atom: Encarta® Online Encyclopedia, North American Edition [home, info]
25. Atom: 1911 edition of the Encyclopedia Britannica [home, info]
26. atom: Free Dictionary [home, info]
27. atom: Hutchinson Dictionaries [home, info]
28. atom: Mnemonic Dictionary [home, info]
29. atom: WordNet 1.7 Vocabulary Helper [home, info]
30. atom: LookWAYup Translating Dictionary/Thesaurus [home, info]
31. atom: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

32. Atom: Natural Magick [home, info]

Business (1 matching dictionary)

33. Atom: Construction Term Glossary [home, info]

Computing (5 matching dictionaries)

34. Atom: Netlingo [home, info]
35. Atom: ILC Internet Terms [home, info]
36. Atom: Webopedia [home, info]
37. Atom: Technopedia [home, info]
38. atom: Encyclopedia [home, info]

Medicine (5 matching dictionaries)

39. Atom: MedTerms.com Medical Dictionary [home, info]
40. Atom: MedFriendly Glossary [home, info]
41. atom: online medical dictionary [home, info]
42. atom: Medical dictionary [home, info]
43. Atom: Drug Medical Dictionary [home, info]

Miscellaneous (3 matching dictionaries)

44. atom: Encyclopedia of Graphic Symbols [home, info]
45. ATOM: Acronym Finder [home, info]
46. ATOM: AbbreviationZ [home, info]

Religion (1 matching dictionary)

47. Atom: Catholic Encyclopedia [home, info]

Science (13 matching dictionaries)

48. Atom: From Stargazers to Starships Glossary [home, info]
49. Atom: Chemistry Dictionary [home, info]
50. Atom: Eric Weisstein's World of Mathematics [home, info]
51. Atom: Eric Weisstein's World of Physics [home, info]
52. Atom: Extragalactic Astronomy [home, info]
53. atom: General Chemistry Online [home, info]
54. atom, atom, atom (measure theory): PlanetMath Encyclopedia [home, info]
55. Atom: NRC Glossary of Nuclear Terms -- [home, info]
56. atom: UNCChem Glossary [home, info]
57. atom: How Many? A Dictionary of Units of Measurement [home, info]
58. atom: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]
59. ATOM: Zoom Astronomy Glossary [home, info]

Slang (1 matching dictionary)

61. Atom, a.t.o.m: Urban Dictionary [home, info]

Tech (6 matching dictionaries)

62. atom: Electronics [home, info]
63. ATOM: Energy Terms [home, info]
64. Atom: Gems and Precious Stones [home, info]
65. Atom: Explosives [home, info]
66. ATOM: Power Engineering [home, info]
67. Atom: Nuclear Terms [home, info]

(Note: See atoms for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (atom) ▸ noun:  (nontechnical usage) a tiny piece of anything ▸ noun:  (physics and chemistry) the smallest component of an element having the chemical properties of the element ▸ Also see atoms ▸ Word origin ▸ Words similar to atom ▸ Usage examples for atom ▸ Idioms related to atom (New!) ▸ Popular adjectives describing atom ▸ Words that often appear near atom ▸ Rhymes of atom ▸ Invented words related to atom