Definify.com

Webster 1913 Edition

Noun.

The quality or state of being viable.

Specifically: –

(a)

(Law)

The capacity of living after birth.

Bouvier.

(b)

The capacity of living, or being distributed, over wide geographical limits;

as, the

viability

of a species

viability ‎(countable and uncountable, plural viabilities)

the property of being viable; the ability to live or to succeed
- 1904, Hugo DeVries, Species and Varieties, Their Origin by Mutation
  Ordinarily these altered organs are sterile, but in some instances a very small quantity of seed is produced, and when testing their viability I succeeded in raising a few plants from them.
- 1980, Jimmy Carter, State of the Union Address
  In making its grants the Endowment will increase its emphasis on techniques which stimulate support for the humanities from non-Federal sources, in order to reinforce our tradition of private philanthropy in this field, and to insure and expand the financial, viability of our cultural institutions and life.

property of being viable