Definition of sororicide
1 : the act of killing one's sister
2 : a person who kills his sister
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Origin and Etymology of sororicide
in sense 1, from Medieval Latin sororicidium, from Latin soror sister + -i- + -cidium -cide (killing); in sense 2, from Latin sororicida, from soror + -i- + -cida -cide (killer)
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