The Collaborative International Dictionary of English v.0.48:

Metoposcopy \Met`o*pos"co*py\, n. [Gr. ? observing the forehead;
   ? the forehead + ? to view: cf. F. m['e]toposcopie.]
   The study of physiognomy; the art of discovering the
   character of persons by their features, or the lines of the
   face.
   [1913 Webster]