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We found 39 dictionaries with English definitions that include the word significant:
Click on the first link on a line below to go directly to a page where "significant" is defined.

General (29 matching dictionaries)

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

Business (2 matching dictionaries)

28. significant: Legal dictionary [home, info]
29. Significant: Accounting, Business Studies and Economics Dictionary [home, info]

Computing (1 matching dictionary)

30. significant: Encyclopedia [home, info]

Medicine (4 matching dictionaries)

31. significant: online medical dictionary [home, info]
32. Significant: AIDS Medical Glossary and Drug Chart [home, info]
33. significant: Dictionary of Cancer Terms [home, info]
34. significant: Medical dictionary [home, info]

Miscellaneous (1 matching dictionary)

35. significant: Idioms [home, info]

Slang (1 matching dictionary)

36. Significant: Urban Dictionary [home, info]

Tech (1 matching dictionary)

37. SIGNIFICANT: Lake and Water Word Glossary [home, info]

(Note: See significants for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (significant) ▸ adjective:  important in effect or meaning ("A significant change in tax laws") ▸ adjective:  too closely correlated to be attributed to chance and therefore indicating a systematic relation ("The interaction effect is significant at the .01 level") ▸ adjective:  fairly large ▸ adjective:  rich in significance or implication ▸ Also see significants ▸ Words similar to significant ▸ Usage examples for significant ▸ Popular nouns described by significant ▸ Words that often appear near significant ▸ Rhymes of significant ▸ Invented words related to significant