地ち球きゅう周しゅう回かい軌き道どうちきゅうしゅうかいきどうMeanings1nounearth orbit; geocentric orbitastronomy›Technical term in astronomy and space engineering for an orbit around the Earth.人じん工こう衛えい星せいは地ち球きゅう周しゅう回かい軌き