Definition of “civilization” - Learner’s Dictionary

civilization

noun ( also UK -isation) uk us /ˌsɪvəlaɪˈzeɪʃən/
SOCIETY [ C, U ]

B2 human society with its developed social organizations, or the culture and way of life of a society at a particular period of time:

ancient civilizations
Nuclear war could mean the end of civilization.
WAY OF LIFE [ U ]

an advanced and comfortable way of life:

modern civilization

(Definition of “civilization” from the Cambridge Learner's Dictionary © Cambridge University Press)