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.),
n. The quality or state of being vincible. [ 1913 Webster ]