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