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

General (25 matching dictionaries)

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

Art (2 matching dictionaries)

26. hardness: ArtLex Lexicon of Visual Art Terminology [home, info]
27. Hardness: English-Chinese Dictionary of Graphic Communications (Big 5) [home, info]

Business (3 matching dictionaries)

28. Hardness: Construction Term Glossary [home, info]
29. Hardness (disambiguation), hardness: Legal dictionary [home, info]
30. hardness: BusinessDictionary.com [home, info]

Computing (1 matching dictionary)

31. Hardness (disambiguation), Hardness (materials science), hardness: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

32. hardness: online medical dictionary [home, info]
33. Hardness (materials science), hardness: Medical dictionary [home, info]

Miscellaneous (2 matching dictionaries)

34. Hardness: Arms and Armour [home, info]
35. hardness: Idioms [home, info]

Science (6 matching dictionaries)

36. hardness: Archaeology Wordsmith [home, info]
37. Hardness: Eric Weisstein's World of Chemistry [home, info]
38. hardness: Dictionary of Geology [home, info]
39. Hardness: Fishkeeping glossary [home, info]
40. hardness: How Many? A Dictionary of Units of Measurement [home, info]

Tech (10 matching dictionaries)

42. HARDNESS: Metal Terminology [home, info]
43. Hardness: AUTOMOTIVE TERMS [home, info]
44. Hardness: Gems and Precious Stones [home, info]
45. Hardness: Glossary of Fastener Terms [home, info]
46. HARDNESS: Lake and Water Word Glossary [home, info]
47. Hardness: Fiberglass Glossary [home, info]
48. Hardness: Oil Analysis [home, info]
49. HARDNESS: Power Engineering [home, info]
50. hardness: Water-Science Glossary of Terms [home, info]
51. hardness (water): Glossary of Water Resource Terms [home, info]

Quick definitions from WordNet (hardness) ▸ noun:  the quality of being difficult to do ("He assigned a series of problems of increasing hardness") ▸ noun:  the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale ▸ noun:  devoid of passion or feeling ▸ noun:  excessive sternness ▸ Words similar to hardness ▸ Usage examples for hardness ▸ Popular adjectives describing hardness ▸ Words that often appear near hardness ▸ Rhymes of hardness ▸ Invented words related to hardness