The Collaborative International Dictionary of English v.0.48:

Ethnography \Eth*nog"ra*phy\, n. [Gr. ? nation + -graphy: cf. F.
   ethnographie.]
   That branch of knowledge which has for its subject the
   characteristics of the human family, developing the details
   with which ethnology as a comparative science deals;
   descriptive ethnology. See Ethnology. Ethnologic

WordNet (r) 3.0 (2006):

ethnography
    n 1: the branch of anthropology that provides scientific
         description of individual human societies [syn:
         ethnography, descriptive anthropology]