planetary
/ˈplænɪtərɪ/adjective
1- of, relating, or belonging to a planet or planets（与）行星（有关）的。
1.1
- of or relating to the earth as a planet（与）地球（有关）的。
词源
late 16th cent.: from late Latin planetarius 'relating to the planets' （recorded only as a noun meaning 'astrologer'）， from planeta 'planet'.