We found 53 dictionaries that define the word classification:

General (25 matching dictionaries)

1. classification: Merriam-Webster
2. classification: Oxford Learner's Dictionaries
3. classification: American Heritage Dictionary of the English Language
4. classification: Collins English Dictionary
5. classification: Vocabulary.com
6. Classification, classification: Wordnik
7. classification: Cambridge Advanced Learner's Dictionary
8. classification: Wiktionary
9. classification: Webster's New World College Dictionary, 4th Ed.
10. classification: The Wordsmyth English Dictionary-Thesaurus
11. classification: Infoplease Dictionary
12. classification: Dictionary.com
13. classification: Cambridge Essential American English Dictionary
14. Classification (biology), Classification (disambiguation), Classification (literature), Classification (literature & grammar), Classification (machine learning), Classification (wine), Classification: Wikipedia, the Free Encyclopedia
15. Classification: Online Plain Text English Dictionary
16. classification: Webster's Revised Unabridged, 1913 Edition
17. classification: Rhymezone
18. Classification: AllWords.com Multi-Lingual Dictionary
19. classification: Webster's 1828 Dictionary
20. classification: FreeDictionary.org
21. classification: Mnemonic Dictionary
22. classification: TheFreeDictionary.com
23. classification: Longman Dictionary of Contemporary English

Art (1 matching dictionary)

24. The Organon: A Conceptually Indexed Dictionary (by Genus and Differentia) (No longer online)

Business (7 matching dictionaries)

25. classification: Merriam-Webster Legal Dictionary
26. CLASSIFICATION: Accounting Glossary
27. Glossary of Legal Terms (No longer online)
28. eyefortransport e-commerce transportation glossary (No longer online)
29. classification: Legal dictionary
30. Accounting, Business Studies and Economics Dictionary (No longer online)
31. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

32. classification: Encyclopedia

Medicine (5 matching dictionaries)

33. classification: Merriam-Webster Medical Dictionary
34. Dorland's Illustrated Medical Dictionary (No longer online)
35. Medical Dictionary (No longer online)
36. online medical dictionary (No longer online)
37. classification: Medical dictionary

Religion (1 matching dictionary)

38. Scientology® and Dianetics® (No longer online)

Science (8 matching dictionaries)

39. Archaeology Wordsmith (No longer online)
40. Bird On! (No longer online)
41. Classification: Eric Weisstein's World of Mathematics
42. Botanical Terms (No longer online)
43. Tree of Life Glossary (No longer online)
44. GLOSSARY OF ORDINATION-RELATED TERMS (No longer online)
45. classification: Evolution Glossary
46. Anthropology dictionary (No longer online)

Sports (1 matching dictionary)

47. Classification: Sports Definitions

Tech (4 matching dictionaries)

48. AUTOMOTIVE TERMS (No longer online)
49. DOD Dictionary of Military Terms (No longer online)
50. Explosives (No longer online)
51. Lake and Water Word Glossary (No longer online)

(Note: See classifications as well.)

Definitions from Wiktionary ( ) ▸ noun:  The act of forming into a class or classes; a distribution into groups, as classes, orders, families, etc., according to some common relations or attributes. Similar: categorization, sorting, categorisation, reclassification, classifying, subclassification, nomenclature, subcategorization, subgrouping, taxonomical, more... Opposite: generalization, unification, amalgamation, integration, blending Phrases: classification system, classification scheme, classification schemes, decimal classification, job classification, more... Adjectives: general, international, simple, racial, following, functional, proper, clinical, systematic, natural, above Colors:     blue,     green,     red,     yellow,     orange, more... ▸ Words similar to classification ▸ Usage examples for classification ▸ Idioms related to classification ▸ Wikipedia articles (New!) ▸ Popular adjectives describing classification ▸ Words that often appear near classification ▸ Rhymes of classification ▸ Invented words related to classification