culmination UK /ˌkʌl.mɪˈneɪ.ʃən/US /ˌkʌl.məˈneɪ.ʃən/ noun4 •An 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.The culmination of this lead happened in 1998 when an informant came forward with details that tied the suspects to a specific disposal location. — 2026 •An attainment or arrival at the highest pitch of glory, power, etc. •The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit. •(US) A ceremony marking the completion of studies at an elementary school, middle school or junior high school. formsculminations