'Demonstrability' definitions:

Definition of 'demonstrability'

From: WordNet
noun
Capability of being demonstrated or logically proved [syn: demonstrability, provability]

Definition of 'Demonstrability'

From: GCIDE
  • Demonstrability \De*mon`stra*bil"i*ty\, n. The quality of being demonstrable; demonstrableness. [1913 Webster]