completion (n.)

"act of bringing to a desired end, consummation, full development," late 14c., complecioun, from Medieval Latin completionem (nominative completio), noun of action from past participle stem of Latin complere "to fill up, complete," from com-, here probably as an intensive prefix (see com-), + plere "to fill" (from PIE root *pele- (1) "to fill").