The spirit of the time; the taste and outlook characteristic of a period or generation: “It’s easy to see how a student . . . in the 1940′s could imbibe such notions. The Zeitgeist encouraged Philosopher-Kings”James Atlas.
[German : Zeit, time (from Middle High German zt, from Old High German; see d- in Indo-European roots) + Geist, spirit; see poltergeist.]