Sororicide refers to the act of killing one's sister. This term is derived from the Latin words "soror," meaning sister, and "cida," meaning killer. Sororicide can occur in various contexts, including familial disputes, psychological issues, or criminal behavior. It is a specific type of fratricide, which involves the killing of a sibling, regardless of gender. The motivations behind sororicide can vary widely, ranging from jealousy and rivalry to mental illness. Cases of sororicide are often examined in criminal psychology to understand the underlying factors that lead to such extreme actions. Understanding these motivations can help in preventing similar incidents in the future.