The story
- Proto-Indo-European*h₂ep
- Proto-Indo-European*h₂epó
- Proto-Hellenic*apó
- Ancient Greekᾰ̓πό (ăpó)
- Ancient Greekᾰ̓πο- (ăpo-)
- Englishapo-
- Englishapsis
- English todayapoapsis
Etymology from Wiktionary, CC BY-SA 4.0.
apoapsis
Today it means: The point of a body's elliptical orbit about the system's centre of mass where the distance between the body and the centre of mass is at its maximum. Full definition →
English apsis ← Ancient Greek ᾰ̓πο- (ăpo-) ← Proto-Hellenic *apó