Apoapsis Definition

ăpō-ăpsĭs
apoapsides
noun
The point at which an orbiting object is farthest away from the center of mass of the body it is orbiting.
American Heritage
The farthest point from the gravitational center in the orbit of any satellite.
Webster's New World

(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.

Wiktionary
Synonyms:
  • point of apoapsis
Antonyms:

Other Word Forms of Apoapsis

Noun

Singular:
apoapsis
Plural:
apoapsides

Origin of Apoapsis

  • apo- +‎ apsis

    From Wiktionary

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apoapsis