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We found 32 dictionaries with English definitions that include the word perturb:
Click on the first link on a line below to go directly to a page where "perturb" is defined.

General (27 matching dictionaries)

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

Business (1 matching dictionary)

26. perturb: Legal dictionary [home, info]

Computing (1 matching dictionary)

27. perturb: Encyclopedia [home, info]

Medicine (1 matching dictionary)

28. perturb: Medical dictionary [home, info]

Science (1 matching dictionary)

29. perturb: Nine Planets Glossary [home, info]

Slang (1 matching dictionary)

30. perturb: Urban Dictionary [home, info]

Quick definitions from WordNet (perturb) ▸ verb:  cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull ("The orbits of these stars were perturbed by the passings of a comet") ▸ verb:  disturb or interfere with the usual path of an electron or atom ("The electrons were perturbed by the passing ion") ▸ verb:  throw into great confusion or disorder ("Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt") ▸ verb:  disturb in mind or make uneasy or cause to be worried or alarmed ("She was rather perturbed by the news that her father was seriously ill") ▸ Word origin ▸ Words similar to perturb ▸ Usage examples for perturb ▸ Words that often appear near perturb ▸ Rhymes of perturb ▸ Invented words related to perturb