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

General (31 matching dictionaries)

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

Art (1 matching dictionary)

30. ruin-: A Cross Reference of Latin and Greek Elements [home, info]

Business (1 matching dictionary)

31. ruin: Legal dictionary [home, info]

Computing (1 matching dictionary)

32. ruin: Encyclopedia [home, info]

Medicine (1 matching dictionary)

33. ruin: online medical dictionary [home, info]

Miscellaneous (2 matching dictionaries)

34. ruin: Encyclopedia of Graphic Symbols [home, info]
35. ruin: Idioms [home, info]

Slang (1 matching dictionary)

36. ruin: Urban Dictionary [home, info]

Tech (1 matching dictionary)

37. RUIN: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info]

(Note: See ruins for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (ruin) ▸ noun:  a ruined building ("They explored several Roman ruins") ▸ noun:  an event that results in destruction ▸ noun:  an irrecoverable state of devastation and destruction ("You have brought ruin on this entire family") ▸ noun:  destruction achieved by wrecking something ▸ noun:  failure that results in a loss of position or reputation ▸ noun:  the process of becoming dilapidated ▸ verb:  destroy or cause to fail ("This behavior will ruin your chances of winning the election") ▸ verb:  fall into ruin ▸ verb:  reduce to ruins ("The country lay ruined after the war") ▸ verb:  reduce to bankruptcy ▸ verb:  deprive of virginity ▸ verb:  destroy completely; damage irreparably ("You have ruined my car by pouring sugar in the tank!") ▸ Also see ruins ▸ Word origin ▸ Words similar to ruin ▸ Usage examples for ruin ▸ Idioms related to ruin (New!) ▸ Popular adjectives describing ruin ▸ Words that often appear near ruin ▸ Rhymes of ruin ▸ Invented words related to ruin