The Collaborative International Dictionary of English v.0.48:
Hagiology \Ha`gi*ol"o*gy\ (-j[y^]), n. [Gr. "a`gios sacred + -logy.] The history or description of the sacred writings or of sacred persons; a narrative of the lives of the saints; a catalogue of saints. --J. H. Newman. [1913 Webster]WordNet (r) 3.0 (2006):
hagiology n 1: literature narrating the lives (and legends) of the saints