kaugus sferoidil, kaugus kõverjoonel, ortodroomne vahemaa, sfääriline kaugus, sferoidiline kaugus
distance between two points on a sphere, measured along the great-circle arc between them, and this arc is the shortest path between the two points on the surface of the sphere, kumeral pinnal kahe punkti vaheline kaugus, mida mõõdetakse piki nendevahelist kõverjoont, ja see kaugus/kaar on lühim vahemaa kumeral pinnal kahe punkti vahel
