consummation

 
Pronunciation: /kɒnsəˈmeɪʃ(ə)n, -sjʊ-/

noun

  • the action of making a marriage or relationship complete by having sexual intercourse: the eager consummation that follows a long and passionate seduction
  • [mass noun] the point at which something is complete or finalized: the consummation of a sale

Origin:

late Middle English: from Latin consummatio(n-), from the verb consummare (see consummate)