'Permanence' definitions:

Definition of 'permanence'

From: WordNet
noun
The property of being able to exist for an indefinite duration [syn: permanence, permanency] [ant: impermanence, impermanency]

Definition of 'Permanence'

From: GCIDE
  • Permanence \Per"ma*nence\, Permanency \Per"ma*nen*cy\, n. [Cf. F. permanence.] The quality or state of being permanent; continuance in the same state or place; duration; fixedness; as, the permanence of institutions; the permanence of nature. [1913 Webster]

Synonyms of 'permanence'

From: Moby Thesaurus