Bullying in school is a serious form of victimization that can cause long-term psychological damage to students.

victimization 是名词，来自动词 victimize（使受害）。victim 意思是"受害者"，后缀 -ize 表示"使...化"，-ation 表示动作或状态。victimization 指"使某人成为受害者的行为或过程"，即"受害行为"或"迫害"。