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We found 51 dictionaries with English definitions that include the word arsenic:
Click on the first link on a line below to go directly to a page where "arsenic" is defined.

General (32 matching dictionaries)

1. arsenic: Merriam-Webster.com [home, info]
2. arsenic: Oxford Learner's Dictionaries [home, info]
3. arsenic: American Heritage Dictionary of the English Language [home, info]
4. arsenic: Collins English Dictionary [home, info]
5. arsenic: Vocabulary.com [home, info]
6. arsenic: Macmillan Dictionary [home, info]
7. Arsenic, arsenic: Wordnik [home, info]
8. arsenic: Cambridge Advanced Learner's Dictionary [home, info]
9. arsenic: Wiktionary [home, info]
10. arsenic: Webster's New World College Dictionary, 4th Ed. [home, info]
11. arsenic: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. arsenic: Infoplease Dictionary [home, info]
13. arsenic: Dictionary.com [home, info]
14. arsenic: Online Etymology Dictionary [home, info]
15. arsenic: UltraLingua English Dictionary [home, info]
16. arsenic: Cambridge Dictionary of American English [home, info]
17. Arsenic (disambiguation), Arsenic: Wikipedia, the Free Encyclopedia [home, info]
18. Arsenic: Online Plain Text English Dictionary [home, info]
19. arsenic: Webster's Revised Unabridged, 1913 Edition [home, info]
20. arsenic: Rhymezone [home, info]
21. Arsenic: AllWords.com Multi-Lingual Dictionary [home, info]
22. arsenic: Webster's 1828 Dictionary [home, info]
23. Arsenic: Encarta® Online Encyclopedia, North American Edition [home, info]
24. Arsenic: 1911 edition of the Encyclopedia Britannica [home, info]
25. arsenic: Free Dictionary [home, info]
26. arsenic: Mnemonic Dictionary [home, info]
27. arsenic: WordNet 1.7 Vocabulary Helper [home, info]
28. arsenic: LookWAYup Translating Dictionary/Thesaurus [home, info]
29. arsenic: Dictionary/thesaurus [home, info]
30. arsenic: Wikimedia Commons US English Pronunciations [home, info]

Art (2 matching dictionaries)

31. arsenic: ArtLex Lexicon of Visual Art Terminology [home, info]
32. Arsenic: Natural Magick [home, info]

Business (3 matching dictionaries)

33. arsenic: Legal dictionary [home, info]
34. arsenic: Financial dictionary [home, info]
35. arsenic: BusinessDictionary.com [home, info]

Computing (1 matching dictionary)

36. arsenic: Encyclopedia [home, info]

Medicine (6 matching dictionaries)

37. Arsenic: MedTerms.com Medical Dictionary [home, info]
38. Arsenic: Medical Dictionary [home, info]
39. arsenic: online medical dictionary [home, info]
40. arsenic: Dictionary of Cancer Terms [home, info]
41. arsenic: Medical dictionary [home, info]
42. Arsenic: Drug Medical Dictionary [home, info]

Miscellaneous (1 matching dictionary)

43. arsenic: Encyclopedia of Graphic Symbols [home, info]

Science (4 matching dictionaries)

44. arsenic: Archaeology Wordsmith [home, info]
45. ARSENIC: The Mineral Gallery [home, info]
46. Arsenic: Extragalactic Astronomy [home, info]
47. arsenic: WebElements Periodic Table of the Elements [home, info]

Slang (1 matching dictionary)

48. arsenic: Urban Dictionary [home, info]

Tech (1 matching dictionary)

49. arsenic: Illustrated Glass Dictionary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (arsenic) ▸ noun:  a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar ▸ noun:  a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide and weed killer ▸ Word origin ▸ Words similar to arsenic ▸ Usage examples for arsenic ▸ Idioms related to arsenic (New!) ▸ Popular adjectives describing arsenic ▸ Words that often appear near arsenic ▸ Rhymes of arsenic ▸ Invented words related to arsenic