The Collaborative International Dictionary of English v.0.48:
Theophany \The*oph"a*ny\, n.; pl. -nies. [Gr. ?; ? God + ? to appear.] A manifestation of God to man by actual appearance, usually as an incarnation. [1913 Webster] [1913 Webster]WordNet (r) 3.0 (2006):
theophany n 1: a visible (but not necessarily material) manifestation of a deity to a human person