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We found 59 dictionaries with English definitions that include the word ontology:
Click on the first link on a line below to go directly to a page where "ontology" is defined.

General (33 matching dictionaries)

1. ontology: Merriam-Webster.com [home, info]
2. ontology: Oxford Learner's Dictionaries [home, info]
3. ontology: American Heritage Dictionary of the English Language [home, info]
4. ontology: Collins English Dictionary [home, info]
5. ontology: Vocabulary.com [home, info]
6. ontology: Macmillan Dictionary [home, info]
7. Ontology, ontology: Wordnik [home, info]
8. ontology: Wiktionary [home, info]
9. ontology: Webster's New World College Dictionary, 4th Ed. [home, info]
10. ontology: The Wordsmyth English Dictionary-Thesaurus [home, info]
11. ontology: Infoplease Dictionary [home, info]
12. Ontology, ontology: Dictionary.com [home, info]
13. ontology: Online Etymology Dictionary [home, info]
14. ontology: UltraLingua English Dictionary [home, info]
15. Ontology (computer science), Ontology (information science), Ontology: Wikipedia, the Free Encyclopedia [home, info]
16. Ontology: Online Plain Text English Dictionary [home, info]
17. ontology: Webster's Revised Unabridged, 1913 Edition [home, info]
18. ontology: Grandiloquent Dictionary [home, info]
19. Ontology: AllWords.com Multi-Lingual Dictionary [home, info]
20. ontology: Webster's 1828 Dictionary [home, info]
21. ontology: Hutchinson's Dictionary of Difficult Words [home, info]
22. Ontology: 1911 edition of the Encyclopedia Britannica [home, info]
23. ontology: Free Dictionary [home, info]
24. ontology: Hutchinson Dictionaries [home, info]
25. ontology: The Phrontistery - A Dictionary of Obscure Words [home, info]
26. ontology: Mnemonic Dictionary [home, info]
27. ontology: WordNet 1.7 Vocabulary Helper [home, info]
28. ontology: LookWAYup Translating Dictionary/Thesaurus [home, info]
29. ontology: Dictionary/thesaurus [home, info]
30. ontology: Worthless Word For The Day [home, info]
31. ontology: Rhymezone [home, info]

Art (4 matching dictionaries)

32. ontology: ArtLex Lexicon of Visual Art Terminology [home, info]
33. ontology: Dictionary of Philosophical Terms and Names [home, info]
34. ontology: Philosophy of Mind [home, info]
35. ontology: Literary Criticism [home, info]

Business (3 matching dictionaries)

36. Ontology: eyefortransport e-commerce transportation glossary [home, info]
37. Ontology: Inflation Glossary [home, info]
38. ontology: BusinessDictionary.com [home, info]

Computing (4 matching dictionaries)

39. ontology: Free On-line Dictionary of Computing [home, info]
40. ontology: Netlingo [home, info]
41. Ontology: Cybernetics and Systems [home, info]
42. Ontology (philosophy), ontology: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

43. ontology: online medical dictionary [home, info]
44. Ontology (philosophy), ontology: Medical dictionary [home, info]

Miscellaneous (3 matching dictionaries)

45. ontology: A Brief Critical Dictionary of Education [home, info]
46. ontology: Glosario de términos filosóficos (en inglés) [home, info]
47. ontology: The Skeptic's Dictionary [home, info]

Religion (3 matching dictionaries)

48. Ontology: Catholic Encyclopedia [home, info]
49. ontology, ontology: Postmodern Bible Dictionary [home, info]
50. ONTOLOGY: Irivng Hexham's Concise Dictionary of Religion [home, info]

Science (6 matching dictionaries)

51. Ontology: Dictionary of anthropology [home, info]
52. Ontology: Drug Discovery and Development [home, info]
53. Ontology: Dictionary of anthropology [home, info]
54. ontology: PlanetMath Encyclopedia [home, info]
55. ontology: Anthropology dictionary [home, info]
56. ontology: FOLDOP - Free On Line Dictionary Of Philosophy [home, info]

Tech (1 matching dictionary)

57. ontology: Search Engine Dictionary [home, info]

(Note: See ontologist for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (ontology) ▸ noun:  the metaphysical study of the nature of being and existence ▸ Also see ontologist ▸ Word origin ▸ Words similar to ontology ▸ Usage examples for ontology ▸ Idioms related to ontology (New!) ▸ Popular adjectives describing ontology ▸ Words that often appear near ontology ▸ Rhymes of ontology ▸ Invented words related to ontology