The term APOGEE, which is a 6 letter word, is used to describe the culmination or climax of something. It is derived from the Greek word 'apogeion' which means 'highest point'. APOGEE is often used to refer to the highest point in an orbit of a celestial body, such as a satellite, or the highest point in a trajectory of a projectile. In other contexts, it can also be used to refer to the highest point of development or achievement of something.