Wiktionary
selenian
a. 1 Pertaining to the moon 2 (context mineralogy English) Describing minerals containing selenium (especially when this replaces another element)
Usage examples of "selenian".
As a selenian, she could have taken a room on one of the upper levels, but since she was trying to get herself reacclimated to Earth-normal gravity, she had requested a berth on 4E.
Moon only once every few months to drop off their cargo and change crews, so few selenians happened to see them unless they were getting drunk in some bar.
Belters, Superiors, selenians, aresians, jovians, and just plain losers.
Equations evolved in his patterns: complex variables, differential 1 equations, topology, catastrophe theory, Selenian mystimatics.