strat·i·fi·ca·tion /ˌstrætɪfɪˈkeɪʃən/ noun [countableC, uncountableU]1 XXwhen society is divided into separate social classes 〔社會的〕分層,階層形成The Indian caste system is an example of social stratification. 印度的種姓制度是社會階層化的一個例子。
—stratify /ˈstrætɪfaɪ/ verb [intransitiveI, transitiveT]