selenology

from WordNet (r) 3.0 (2006)

selenology
    n 1: the branch of astronomy that deals with the moon

from The Collaborative International Dictionary of English v.0.48

Selenology \Sel`e*nol"o*gy\, n. [Gr. selh`nh the moonn + -logy.]
   That branch of astronomy which treats of the moon. --
   {Sel`e*no*log"i*cal}, a.
   [1913 Webster]