selenographyPronunciation: /ˌsɛlɪˈnɒgrəfi, ˌsiː-/Definition of selenography noun [mass noun] the scientific mapping of the moon; lunar geography. Derivatives selenographer noun selenographicPronunciation: /-nəˈgrafɪk/ adjective selenographical adjective selenography in other Oxford dictionaries Definition of selenography in the US English dictionary