ˌseləˈnägrəfē noun
( -es )
Etymology: selen- (I) + -graphy
1. : the science of the physical features of the moon
attention of astronomers was directed to other fields, and selenography … made no further progress — R.B.Baldwin
2. : the physical geography of the moon
the first major treatise on descriptive selenography to appear in English for a quarter-century — Joseph Ashbrook