1The point in the orbit of a celestial object at which it is at its greatest distance from the body which it orbits. Occasionally: the point of greatest altitude in the apparent course of the sun, moon, or a planet across the sky.
In most examples with reference to the Ptolemaic system in which the sun, moon, and planets were considered to revolve around the earth; = "apogee". Compare also "aphelion", "apogee", "ascendant".
2 figurative, rare The point of greatest attainment or influence; zenith, culmination; ascendancy; = "apogee". Compare "ascendant".
Late Middle English (in an earlier sense). Partly (i) from Middle French, French auge apogee of a planet, apsis of a planet.