Crossword clues for apoapsis
Wiktionary
apoapsis
n. (context astronomy English) The point of a body's ellipse orbit about the system's centre of mass where the distance between the body and the centre of mass is at its maximum.
WordNet
apoapsis
n. (astronomy) the point in an orbit farthest from the body being orbited [syn: point of apoapsis] [ant: periapsis, periapsis]