Zeitgeist
Concise Oxford English Dictionary © 2008 Oxford University Press:
zeitgeist /ˈzʌɪtgʌɪst/
▶noun the defining spirit or mood of a particular period of history.
– origin C19: from Ger. Zeitgeist, from Zeit ‘time’ + Geist ‘spirit’.
'Zeitgeist' also found in these Oxford entries:

