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

General (31 matching dictionaries)

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

Art (1 matching dictionary)

30. Helmet: An Illustrated Dictionary of Jewelry [home, info]

Business (1 matching dictionary)

31. Helmet: Construction Term Glossary [home, info]

Computing (1 matching dictionary)

32. helmet: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

33. helmet: online medical dictionary [home, info]
34. helmet: Medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

35. Helmet: Brilliant Dream Dictionary [home, info]
36. Helmet: Arms and Armour [home, info]
37. HELMET: Acronym Finder [home, info]

Religion (2 matching dictionaries)

38. Helmet: Easton Bible [home, info]
39. Helmet: Smith's Bible Dictionary [home, info]

Science (1 matching dictionary)

40. helmet: Archaeology Wordsmith [home, info]

Slang (1 matching dictionary)

41. helmet: English slang and colloquialisms used in the United Kingdom [home, info]

Sports (5 matching dictionaries)

42. Helmet: Internet Karting Glossary [home, info]
43. HELMET: Glossary of Canoe Terminology [home, info]
44. Helmet: Bicycle Glossary [home, info]
45. HELMET: CAVE AND KARST TERMINOLOGY [home, info]
46. Helmet: Sports Definitions [home, info]

Tech (1 matching dictionary)

47. Helmet: AUTOMOTIVE TERMS [home, info]

(Note: See helmets for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (helmet) ▸ noun:  a protective headgear made of hard material to resist blows ▸ noun:  armor plate that protects the head ▸ Also see helmets ▸ Word origin ▸ Words similar to helmet ▸ Usage examples for helmet ▸ Idioms related to helmet (New!) ▸ Popular adjectives describing helmet ▸ Words that often appear near helmet ▸ Rhymes of helmet ▸ Invented words related to helmet