We found 29 dictionaries that define the word extensible:

General (19 matching dictionaries)

1. extensible: Merriam-Webster
2. extensible: Oxford Learner's Dictionaries
3. extensible: American Heritage Dictionary of the English Language
4. extensible: Collins English Dictionary
5. extensible: Vocabulary.com
6. Extensible, extensible, eXtensible: Wordnik
7. extensible: Wiktionary
8. extensible: Webster's New World College Dictionary, 4th Ed.
9. extensible: The Wordsmyth English Dictionary-Thesaurus
10. extensible: Infoplease Dictionary
11. Extensible, extensible: Dictionary.com
12. Extensible: Online Plain Text English Dictionary
13. extensible: Webster's Revised Unabridged, 1913 Edition
14. extensible: Rhymezone
15. Extensible: AllWords.com Multi-Lingual Dictionary
16. extensible: Webster's 1828 Dictionary
17. extensible: FreeDictionary.org
18. extensible: Mnemonic Dictionary
19. extensible: TheFreeDictionary.com

Business (1 matching dictionary)

20. extensible: Legal dictionary

Computing (4 matching dictionaries)

21. extensible: Free On-line Dictionary of Computing
22. extensible: CCI Computer
23. The Microsoft Lexicon (No longer online)
24. extensible: Encyclopedia

Medicine (3 matching dictionaries)

25. extensible: Merriam-Webster Medical Dictionary
26. online medical dictionary (No longer online)
27. extensible: Medical dictionary

Miscellaneous (1 matching dictionary)

28. extensible: Idioms

Tech (1 matching dictionary)

29. Rane Professional Audio Reference (No longer online)

(Note: See extensibility as well.)

Definitions from Wiktionary (extensible) ▸ adjective:  Capable of being extended. Similar: protrusible, extensile, protractile, protrusile, protractible, extendible, productile, hyperextensible, stretchable, expandable, more... Opposite: inextensible, inflexible, unyielding Phrases: extensible database, Extensible Markup Language, network extensible window system, extensible stylesheet language, Extensible Authentication Protocol, more... ▸ Words similar to extensible ▸ Usage examples for extensible ▸ Idioms related to extensible ▸ Wikipedia articles (New!) ▸ Popular nouns described by extensible ▸ Words that often appear near extensible ▸ Rhymes of extensible ▸ Invented words related to extensible