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We found 49 dictionaries with English definitions that include the word vacuum:
Click on the first link on a line below to go directly to a page where "vacuum" is defined.

General (30 matching dictionaries)

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

Art (1 matching dictionary)

29. Vacuum: Natural Magick [home, info]

Business (1 matching dictionary)

30. vacuum: Legal dictionary [home, info]

Computing (1 matching dictionary)

31. vacuum: Encyclopedia [home, info]

Medicine (3 matching dictionaries)

32. Vacuum: Medical Dictionary [home, info]
33. vacuum: online medical dictionary [home, info]
34. vacuum: Medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

35. Vacuum: Brilliant Dream Dictionary [home, info]
36. VACUUM: Acronym Finder [home, info]
37. vacuum: Idioms [home, info]

Science (5 matching dictionaries)

38. Vacuum: Eric Weisstein's World of Physics [home, info]
39. Vacuum: Extragalactic Astronomy [home, info]
40. vacuum: General Chemistry Online [home, info]
41. Vacuum: Accelerator Glossary [home, info]
42. VACUUM: Zoom Astronomy Glossary [home, info]

Slang (1 matching dictionary)

43. The Vacuum: Urban Dictionary [home, info]

Tech (4 matching dictionaries)

44. vacuum: Webster's New World Telecom Dictionary [home, info]
45. Vacuum: AUTOMOTIVE TERMS [home, info]
46. Vacuum: PUMP AND SEAL TERMS [home, info]
47. VACUUM: Power Engineering [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (vacuum) ▸ noun:  an electrical home appliance that cleans by suction ▸ noun:  a region empty of matter ▸ noun:  the absence of matter ▸ noun:  an empty area or space ("Without their support he'll be ruling in a vacuum") ▸ verb:  clean with a vacuum cleaner ("Vacuum the carpets") ▸ Word origin ▸ Words similar to vacuum ▸ Usage examples for vacuum ▸ Popular adjectives describing vacuum ▸ Words that often appear near vacuum ▸ Rhymes of vacuum ▸ Invented words related to vacuum