IPA: //rʌstɪˈkeɪʃən//
KK: /rʌstɪˈkeɪʃən/
The process of moving someone from a city to a rural area, often for educational or disciplinary reasons.
After his misbehavior, he faced rustication from the university and was sent to a rural campus.
Rustication is formed from "rusticus" (meaning rural or rustic) and the suffix "-ation" (indicating a process or action). The word refers to the process of making something rustic or rural in character, often used in architecture to describe a style that emphasizes a rough, unfinished appearance.
Think of 'rustic' which relates to the countryside, and remember that 'rustication' means the process of making something have a rural or rough character.