'Indispensability' definitions:
Definition of 'indispensability'
(from WordNet)
noun
The quality possessed by something that you cannot possibly do without [syn: indispensability, indispensableness, vitalness] [ant: dispensability, dispensableness]
Definition of 'Indispensability'
From: GCIDE
- Indispensability \In`dis*pen`sa*bil"i*ty\, n. [Cf. F. indispensabilit['e].] Indispensableness. [1913 Webster]