Definitions
1.NounThe attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.
2.NounAn endpoint arrived at after some series of actions or events, or some period, usually after the series or period has ended. The sum of something.
3.NounAn attainment or arrival at the highest pitch of glory, power, etc.
4.NounA ceremony marking the completion of studies at an elementary school, middle school or junior high school.