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Related to apoapsis: periapsis
n. pl. ap·o·ap·si·des (-ăp′sĭ-dēz′)
The point at which an orbiting object is farthest away from the center of mass of the body it is orbiting.
the point in an elliptical orbit which is farthest from the object being orbited
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|Noun||1.||apoapsis - (astronomy) the point in an orbit farthest from the body being orbited|
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
apogee - apoapsis in Earth orbit; the point in its orbit where a satellite is at the greatest distance from the Earth
aphelion - apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun
apojove - apoapsis in orbit around Jupiter
celestial point - a point in the heavens (on the celestial sphere)
celestial orbit, orbit - the (usually elliptical) path described by one celestial body in its revolution about another; "he plotted the orbit of the moon"