IPA: /ɪnˌtɜrnəlaɪˈzeɪʃən/
KK: /ɪnˌtɜrnəlaɪˈzeɪʃən/
The process of making something a part of your own thoughts or beliefs, often by learning or experiencing it.
The internalization of cultural values can shape a person's identity.
Internalization is formed from "inter-" (meaning within) and "nal" (from Latin "nalis", meaning pertaining to) and the suffix "-ization" (meaning the process of making or becoming). The word refers to the process of making something internal or incorporating it within oneself.
Think of the process of making something 'within' ('inter-') and 'pertaining to' ('nal') — that's how internalization means to incorporate something within oneself.