orography

from WordNet (r) 3.0 (2006)

orography
    n 1: the science of mountains [syn: {orology}, {orography}]

from The Collaborative International Dictionary of English v.0.48

Orography \O*rog"ra*phy\, n. [Gr. 'o`ros, a mountain + -graphy.]
   That branch of science which treats of mountains and mountain
   systems; orology; as, the orography of Western Europe.
   [1913 Webster]