We found 11 dictionaries that define the word proof theory:

General (4 matching dictionaries)

1. proof theory: Collins English Dictionary
2. proof theory: Dictionary.com
3. Proof theory: Wikipedia, the Free Encyclopedia
4. proof theory: TheFreeDictionary.com

Computing (2 matching dictionaries)

5. proof theory: Free On-line Dictionary of Computing
6. proof theory: Encyclopedia

Medicine (1 matching dictionary)

7. online medical dictionary (No longer online)

Science (4 matching dictionaries)

8. Proof Theory: Eric Weisstein's World of Mathematics
9. Proof-Theory: PlanetMath Encyclopedia
10. FOLDOP - Free On Line Dictionary Of Philosophy (No longer online)

Definitions from Wikipedia (Proof theory) ▸ noun:  a major branchAccording to Wang, pp. ▸ Words similar to proof theory ▸ Usage examples for proof theory ▸ Idioms related to proof theory ▸ Wikipedia articles (New!) ▸ Words that often appear near proof theory ▸ Rhymes of proof theory ▸ Invented words related to proof theory