IPA: /ˈpætrɪˌsaɪd/
KK: /pætrɪsaɪd/
The act of killing one's own father or a person who commits this act.
In the story, the character was driven to patricide due to a long-standing family feud.
Patricide is formed from "pater" (meaning father) and "-cide" (meaning to kill). The word refers to the act of killing one's father.
Think of 'pater' meaning father and '-cide' meaning to kill — that's why patricide means the act of killing one's father.