'Perdurable' definitions:

Definition of 'perdurable'

From: WordNet
adjective
Very long lasting; "less durable rocks were gradually worn away to form valleys"; "the perdurable granite of the ancient Appalachian spine of the continent" [syn: durable, indestructible, perdurable, undestroyable]

Definition of 'Perdurable'

From: GCIDE
  • Perdurable \Per*dur"a*ble\ (p[~e]r*d[=u]r"[.a]*b'l; 277), n. [Cf. F. perdurable, OE. pardurable. See Perdure.] Very durable; lasting; continuing long. [Archaic] --Chaucer. --Shak. [1913 Webster] -- {Per*dur"a*bly}, adv. [Archaic] [1913 Webster] Perdurance