'Vincible ignorance' definitions:

Definition of 'Vincible ignorance'

From: GCIDE

Vincible \Vin"ci*ble\, a. [L. vincibilis, fr. vincere to vanquish, conquer: cf. F. vincible. See Victor.] Capable of being overcome or subdued; conquerable. "He, not vincible in spirit . . . drew his sword." --Hayward. "Vincible by human aid." --Paley. [1913 Webster]
Vincible ignorance (Theol.), ignorance within the individual's control and for which, therefore, he is responsible before God. [1913 Webster]