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We found 67 dictionaries with English definitions that include the word boom:
Click on the first link on a line below to go directly to a page where "boom" is defined.

General (37 matching dictionaries)

1. boom: Merriam-Webster.com [home, info]
2. boom, boom, boom: Oxford Learner's Dictionaries [home, info]
3. boom, boom: American Heritage Dictionary of the English Language [home, info]
4. boom: Collins English Dictionary [home, info]
5. boom: Vocabulary.com [home, info]
6. boom, boom: Macmillan Dictionary [home, info]
7. Boom, boom: Wordnik [home, info]
8. boom: Cambridge Advanced Learner's Dictionary [home, info]
9. Boom: InfoVisual Visual Dictionary [home, info]
10. boom: Wiktionary [home, info]
11. boom: Webster's New World College Dictionary, 4th Ed. [home, info]
12. boom: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. boom: Infoplease Dictionary [home, info]
14. boom: Dictionary.com [home, info]
15. boom (n.), boom (v.): Online Etymology Dictionary [home, info]
16. boom: UltraLingua English Dictionary [home, info]
17. boom: Cambridge Dictionary of American English [home, info]
18. boom: Cambridge International Dictionary of Idioms [home, info]
19. BOOM, Boom (Anastacia song), Boom (Anjulie song), Boom (Mario song), Boom (P.O.D. song), Boom (Snoop Dogg song), Boom (T-Pain song), Boom (TV series), Boom (The Sonics album), Boom (Walker Hayes album), Boom (X Ambassadors song), Boom (containment), Boom (entertainer), Boom (film), Boom (navigational barrier), Boom (play), Boom (sailing), Boom (ship), Boom (source port), Boom (windsurfing), Boom, Boom, The Boom: Wikipedia, the Free Encyclopedia [home, info]
20. boom: Cambridge International Dictionary of Phrasal Verbs [home, info]
21. Boom: Online Plain Text English Dictionary [home, info]
22. boom: Webster's Revised Unabridged, 1913 Edition [home, info]
23. boom: Rhymezone [home, info]
24. Boom (m), boom, boom, boom, boom (de): AllWords.com Multi-Lingual Dictionary [home, info]
25. boom: Webster's 1828 Dictionary [home, info]
26. boom: Stammtisch Beau Fleuve Acronyms [home, info]
27. boom: Hutchinson's Dictionary of Difficult Words [home, info]
28. Boom: Dictionary of Phrase and Fable (1898) [home, info]
29. Boom: 1911 edition of the Encyclopedia Britannica [home, info]
30. boom: Free Dictionary [home, info]
31. boom: Hutchinson Dictionaries [home, info]
32. boom: Mnemonic Dictionary [home, info]
33. boom: WordNet 1.7 Vocabulary Helper [home, info]
34. Boom, boom: LookWAYup Translating Dictionary/Thesaurus [home, info]
35. boom: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

36. BOOM: Technical Glossary of Theatre Terms [home, info]

Business (9 matching dictionaries)

37. Boom: MoneyGlossary.com [home, info]
38. boom: INVESTORWORDS [home, info]
39. Boom: Construction Term Glossary [home, info]
40. Boom: Inflation Glossary [home, info]
41. Boom: Investopedia [home, info]
42. Boom, boom: Legal dictionary [home, info]
43. Boom, Boom: Financial dictionary [home, info]
44. Boom: Accounting, Business Studies and Economics Dictionary [home, info]
45. boom: BusinessDictionary.com [home, info]

Computing (2 matching dictionaries)

46. BOOM: Webopedia [home, info]
47. Boom, boom: Encyclopedia [home, info]

Medicine (1 matching dictionary)

48. boom: online medical dictionary [home, info]

Miscellaneous (4 matching dictionaries)

49. BOOM: Ka-BOOM! Comicbook Words on Historical Principles [home, info]
50. BOOM: Acronym Finder [home, info]
51. BOOM: AbbreviationZ [home, info]
52. boom: Idioms [home, info]

Science (1 matching dictionary)

53. Boom: Bird On! [home, info]

Slang (3 matching dictionaries)

54. boom: English slang and colloquialisms used in the United Kingdom [home, info]
55. Boom: Street Terms: Drugs and the Drug Trade [home, info]
56. Boom, Boom, boom, the boom: Urban Dictionary [home, info]

Sports (1 matching dictionary)

57. Boom: Sports Definitions [home, info]

Tech (8 matching dictionaries)

58. Boom: AUTOMOTIVE TERMS [home, info]
59. Boom: Construction deterioration & building durability glossary [home, info]
60. Boom: Glossary of video terms [home, info]
61. boom: Master Mariner [home, info]
62. BOOM: Lake and Water Word Glossary [home, info]
63. Boom: Construction Glossary [home, info]
64. Boom: PhotoNotes Dictionary of Film and Digital Photography [home, info]
65. boom: SeaTalk Dictionary of English Nautical Language [home, info]

(Note: See booms for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (boom) ▸ noun:  any of various more-or-less horizontal spars or poles used to extend the foot of a sail or for handling cargo or in mooring ▸ noun:  a pole carrying an overhead microphone projected over a film or tv set ▸ noun:  a deep prolonged loud noise ▸ noun:  a sudden happening that brings good fortune (as a sudden opportunity to make money) ("The demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed lik an assembly line") ▸ noun:  a state of economic prosperity ▸ verb:  make a deep hollow sound ("Her voice booms out the words of the song") ▸ verb:  make a resonant sound, like artillery ("His deep voice boomed through the hall") ▸ verb:  grow stronger ("The economy was booming") ▸ verb:  be the case that thunder is being heard ▸ verb:  hit hard ▸ name:  A surname (very rare: popularity rank in the U.S.: #27963) ▸ Also see booms ▸ Word origin ▸ Words similar to boom ▸ Usage examples for boom ▸ Idioms related to boom (New!) ▸ Popular adjectives describing boom ▸ Words that often appear near boom ▸ Rhymes of boom ▸ Invented words related to boom