We found 18 dictionaries that define the word modal logic:

General (11 matching dictionaries)

1. modal logic: Collins English Dictionary
2. modal logic: Vocabulary.com
3. modal logic: Wordnik
4. modal logic: Wiktionary
5. modal logic: Dictionary.com
6. Modal logic: Wikipedia, the Free Encyclopedia
7. modal logic: Rhymezone
8. modal logic: Stammtisch Beau Fleuve Acronyms
9. modal logic: FreeDictionary.org
10. modal logic: Mnemonic Dictionary
11. modal logic: TheFreeDictionary.com

Art (2 matching dictionaries)

12. modal logic: Dictionary of Philosophical Terms and Names
13. Modal logic: Lexicon of Linguistics

Business (1 matching dictionary)

14. modal logic: Legal dictionary

Computing (2 matching dictionaries)

15. modal logic: Free On-line Dictionary of Computing
16. modal logic: Encyclopedia

Medicine (1 matching dictionary)

17. online medical dictionary (No longer online)

Science (1 matching dictionary)

18. FOLDOP - Free On Line Dictionary Of Philosophy (No longer online)

(Note: See modal_logics as well.)

Definitions from Wiktionary (modal logic) ▸ noun:  (logic) Any formal system that attempts to deal with modalities, such as possibility and necessity, but also obligation and permission. Similar: modal, modality, double modal, logicity, term logic, paramodulation, modal auxiliary, logical connective, holding, modus tollens, more... Opposite: alethic logic, deontic logic, epistemic logic Types: alethic, epistemic, deontic, doxastic, more... Phrases: Epistemic modal logic, more... ▸ Words similar to modal logic ▸ Usage examples for modal logic ▸ Idioms related to modal logic ▸ Wikipedia articles (New!) ▸ Words that often appear near modal logic ▸ Rhymes of modal logic ▸ Invented words related to modal logic