We found 29 dictionaries that define the word functionality:

General (20 matching dictionaries)

1. functionality: Merriam-Webster.com
2. functionality, functionality: Oxford Learner's Dictionaries
3. functionality: American Heritage Dictionary of the English Language
4. functionality: Collins English Dictionary
5. Functionality, functionality: Wordnik
6. functionality: Cambridge Advanced Learner's Dictionary
7. functionality: Wiktionary
8. functionality: Dictionary.com
9. Functionality (Chemistry), Functionality (chemistry): Wikipedia, the Free Encyclopedia
10. functionality: Rhymezone
11. functionality: Free Dictionary
12. functionality: Mnemonic Dictionary
13. functionality: LookWAYup Translating Dictionary/Thesaurus
14. functionality: Dictionary/thesaurus
15. functionality: Wikimedia Commons US English Pronunciations

Business (3 matching dictionaries)

16. MoneyGlossary.com (No longer online)
17. BuzzWhack (No longer online)
18. functionality: Legal dictionary

Computing (3 matching dictionaries)

19. functionality: Free On-line Dictionary of Computing
20. functionality: Netlingo
21. functionality: Encyclopedia

Medicine (2 matching dictionaries)

22. online medical dictionary (No longer online)
23. functionality: Medical dictionary

Slang (1 matching dictionary)

24. functionality: Urban Dictionary

(Note: See functional as well.)

Definitions from Wiktionary ( ) ▸ noun:  (uncountable) The ability to do a task, performance, or execution; a set of functions that something is able or equipped to perform. ▸ noun:  (US, law, uncountable) In United States trademark law, the tendency of a product design to serve a function other than identification of the product, preventing that design from being protected as a trademark. ▸ noun:  (organic chemistry, countable) The presence of a functional group. Similar: funtionality, functionhood, effectivity, potency, competency, technicity, practicality, competence, ability, behavior, more... Opposite: dysfunction, non-functionality, disfunctionality Types: efficiency, usability, reliability, scalability, security, compatibility, interoperability, flexibility, customizability, more... Phrases: GameCube online functionality, PlayStation 2 online functionality, Dreamcast online functionality, to give functionality, missing functionality, more... Adjectives: new, same, additional, basic, more, similar, full, specific, common, limited, extra ▸ Words similar to functionality ▸ Usage examples for functionality ▸ Idioms related to functionality ▸ Civic discussion about functionality (New!) ▸ Popular adjectives describing functionality ▸ Words that often appear near functionality ▸ Rhymes of functionality ▸ Invented words related to functionality