from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The killing of one's sister.
  • n. One who kills one's own sister.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the killing of one's sister
  • n. a person who kills his/her sister

from the GNU version of the Collaborative International Dictionary of English

  • n. The murder of one's sister; also, one who murders or kills one's own sister.

from The Century Dictionary and Cyclopedia

  • n. One who kills his sister.
  • n. The murder of a sister.


Latin soror, sister; + -cide.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin sororicida ("one who kills his sister"), from soror ("sister"). (Wiktionary)


  • As she has already unseated Lisa's father Frank as Governor, this match-up would make for great political theater and Republican fratricide, or perhaps sororicide.

    Poll: Palin Hasn't Done Herself Any Favors For 2012

  • The intending sororicide and suicide is restored to his fastenings; his sister taken back to her tent; a trooper detailed to stand sentry beside and frustrate any attempt at a second escapade.

    The Lone Ranche

  • A Shadow That Remains Cast invents an infamous alleged sororicide, a crime for which the older sister is acquitted, vital evidence having gone missing before the trial.


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