Apoapsis

Origin

- + apsis

Full definition of apoapsis

Noun

1. (astronomy) 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.

Usage notes

For some celestial bodies, specialised terms are used.

Synonyms

• apocenter

Antonyms

• periapsis

Related terms

• apastron
• aphelion
• apolune
• apogee