literally, the resolution of the plot by the device of a god ("deus") arriving onstage by means of a piece of equipment ("machina") and solving all the characters' problems; usually refers to an unlikely, improbable, contrived, illogical, or clumsy ending or suddenly-appearing plot device that alleviates a difficult situation or brings about a denouement - just in the nick of time; can sometimes refer to an unexpected, artificial, or improbable character