/ ˈæpədʒiː; NAmE / noun [ sing. ]
1.
( formal ) the highest point of sth, where it is greatest or most successful
2.
( astronomy ) the point in the orbit of the moon, a planet or other object in space when it is furthest from the planet, for example the earth, around which it turns
—compare perigee
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WORD ORIGIN
late 16th cent.: from French apogée or modern Latin apogaeum , from Greek apogaion (diastēma) , (distance) away from earth, from apo from + gaia , gē earth.