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We found 42 dictionaries with English definitions that include the word pernicious:
Click on the first link on a line below to go directly to a page where "pernicious" is defined.

General (34 matching dictionaries)

1. pernicious: Merriam-Webster.com [home, info]
2. pernicious: Oxford Learner's Dictionaries [home, info]
3. pernicious: American Heritage Dictionary of the English Language [home, info]
4. pernicious: Collins English Dictionary [home, info]
5. pernicious: Vocabulary.com [home, info]
6. pernicious: Macmillan Dictionary [home, info]
7. Pernicious, pernicious: Wordnik [home, info]
8. pernicious: Cambridge Advanced Learner's Dictionary [home, info]
9. pernicious: Wiktionary [home, info]
10. pernicious: Webster's New World College Dictionary, 4th Ed. [home, info]
11. pernicious: V2 Vocabulary Building Dictionary [home, info]
12. pernicious: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. pernicious: Infoplease Dictionary [home, info]
14. pernicious: Dictionary.com [home, info]
15. pernicious: Online Etymology Dictionary [home, info]
16. pernicious: UltraLingua English Dictionary [home, info]
17. pernicious: Cambridge Dictionary of American English [home, info]
18. Pernicious: Wikipedia, the Free Encyclopedia [home, info]
19. Pernicious: Online Plain Text English Dictionary [home, info]
20. pernicious: Webster's Revised Unabridged, 1913 Edition [home, info]
21. pernicious: Rhymezone [home, info]
22. Pernicious: AllWords.com Multi-Lingual Dictionary [home, info]
23. pernicious: Webster's 1828 Dictionary [home, info]
24. pernicious: Stammtisch Beau Fleuve Acronyms [home, info]
25. pernicious: Hutchinson's Dictionary of Difficult Words [home, info]
26. pernicious: Free Dictionary [home, info]
27. pernicious: Hutchinson Dictionaries [home, info]
28. pernicious: The Phrontistery - A Dictionary of Obscure Words [home, info]
29. pernicious: Mnemonic Dictionary [home, info]
30. pernicious: WordNet 1.7 Vocabulary Helper [home, info]
31. pernicious: LookWAYup Translating Dictionary/Thesaurus [home, info]
32. pernicious: Dictionary/thesaurus [home, info]

Business (1 matching dictionary)

33. pernicious: Legal dictionary [home, info]

Computing (1 matching dictionary)

34. pernicious: Encyclopedia [home, info]

Medicine (4 matching dictionaries)

35. pernicious: online medical dictionary [home, info]
36. Pernicious: Hepatitis C Information Central [home, info]
37. pernicious: Medical dictionary [home, info]
38. pernicious: Hyperdictionary [home, info]

Miscellaneous (1 matching dictionary)

39. pernicious: A Word A Day [home, info]

Slang (1 matching dictionary)

40. pernicious: Urban Dictionary [home, info]

(Note: See perniciousness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (pernicious) ▸ adjective:  working or spreading in a hidden and usually injurious way ▸ adjective:  exceedingly harmful ▸ Also see perniciousness ▸ Word origin ▸ Words similar to pernicious ▸ Usage examples for pernicious ▸ Idioms related to pernicious (New!) ▸ Popular nouns described by pernicious ▸ Words that often appear near pernicious ▸ Rhymes of pernicious ▸ Invented words related to pernicious