The Collaborative International Dictionary of English v.0.48:

Egyptology \E`gyp*tol"o*gy\, n. [Egypt + -logy.]
   The science or study of Egyptian antiquities, esp. the
   hieroglyphics.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Egyptology
    n 1: archeology of ancient Egyptian artifacts