'Viability' definitions:

Definition of 'viability'

From: WordNet
noun
(of living things) capable of normal growth and development
noun
Capable of being done in a practical and useful way

Definition of 'Viability'

From: GCIDE
  • Viability \Vi`a*bil"i*ty\, n. The quality or state of being viable. Specifically: [1913 Webster] (a) (Law) The capacity of living after birth. --Bouvier. [1913 Webster] (b) The capacity of living, or being distributed, over wide geographical limits; as, the viability of a species. [1913 Webster]

Synonyms of 'viability'

From: Moby Thesaurus