A more thorough explanation:

Definition: Sororicide is the act of killing one's own sister or a person who kills his or her sister. It is similar to fratricide, which is the act of killing one's own brother.

Example 1: John was arrested for sororicide after he killed his younger sister in a fit of rage.

Example 2: The novel "My Sister, the Serial Killer" by Oyinkan Braithwaite explores the theme of sororicide as the protagonist helps her sister cover up a series of murders.

These examples illustrate the definition of sororicide as the intentional killing of one's own sister. It is a rare and extreme form of violence that can have devastating consequences for families and communities.