The English
proper name for Earth's natural satellite is "
the Moon".
[9][10] The noun
moon derives from
moone (around 1380), which developed from
mone (1135), which derives from
Old English mōna (dating from before 725), which, like all
Germanic language cognates, ultimately stems from
Proto-Germanic *mǣnōn.
[11]
The principal modern English adjective pertaining to the Moon is
lunar, derived from the Latin
Luna. Another less common adjective is
selenic, derived from the Ancient Greek
Selene (
Σελήνη), from which the prefix "seleno-" (as in
selenography) is derived.
[12]