We found 29 dictionaries that define the word diachronic:

General (18 matching dictionaries)

1. diachronic: Merriam-Webster
2. diachronic: Oxford Learner's Dictionaries
3. diachronic: American Heritage Dictionary of the English Language
4. diachronic: Collins English Dictionary
5. diachronic: Vocabulary.com
6. diachronic: Wordnik
7. diachronic: Wiktionary
8. diachronic: Webster's New World College Dictionary, 4th Ed.
9. diachronic: The Wordsmyth English Dictionary-Thesaurus
10. diachronic: Infoplease Dictionary
11. diachronic: Dictionary.com
12. Diachronic: Wikipedia, the Free Encyclopedia
13. diachronic: Rhymezone
14. diachronic: FreeDictionary.org
15. diachronic: Mnemonic Dictionary
16. diachronic: TheFreeDictionary.com

Art (2 matching dictionaries)

17. Diachronic: Glossary of English Grammar Terms
18. Literary Criticism (No longer online)

Computing (1 matching dictionary)

19. Diachronic: Cybernetics and Systems

Medicine (4 matching dictionaries)

20. Diachronic: MedTerms.com Medical Dictionary
21. online medical dictionary (No longer online)
22. diachronic: Medical dictionary
23. Diachronic: Drug Medical Dictionary

Miscellaneous (1 matching dictionary)

24. A Brief Critical Dictionary of Education (No longer online)

Religion (1 matching dictionary)

25. Postmodern Bible Dictionary (No longer online)

Science (2 matching dictionaries)

26. Archaeology Wordsmith (No longer online)
27. Anthropology dictionary (No longer online)

(Note: See diachronically as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Occurring over or changing with time. ▸ adjective:  Of, pertaining to or concerned with changes that occur over time. Similar: historical, diacronic, dichronic, chronal, diatopic, chronological, metachronic, heterochronistic, parachronic, geochronic, more... Opposite: synchronic, simultaneous, concurrent Types: historical, evolutionary, developmental, phylogenetic, more... Phrases: diachronic study, diachronic linguistics, study, diachronic, study diachronic, more... ▸ Words similar to diachronic ▸ Usage examples for diachronic ▸ Idioms related to diachronic ▸ Wikipedia articles (New!) ▸ Popular nouns described by diachronic ▸ Words that often appear near diachronic ▸ Rhymes of diachronic ▸ Invented words related to diachronic