地ち球きゅう周しゅう回かい軌き道どうMeaningsNoun1. earth orbit; geocentric orbitKanji used地ground球sphere周circumference回going around軌tracks道roadwayComposed of地ち球きゅうEarth; the globeNoun周しゅう回かいgoing around; orbiting; circling; circumference; girth; surroundingsNoun軌き道どうorbit; trajectory; (railroad) track; (right) track; proper courseNoun