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sororicide

[suh-rawr-uh-sahyd, -ror-]
noun
  1. a person who kills his or her sister.
  2. the act of killing one's own sister.

Origin of sororicide

1650–60; < Latin sorōricīda one who kills his sister, -cīdium the act of killing one's sister, equivalent to sorōr- (stem of soror) sister + -cīda, -cīdium -cide
Related formsso·ror·i·cid·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for sororicide

sororicide

noun
  1. the act of killing one's own sister
  2. a person who kills his or her sister
Derived Formssororicidal, adjective

Word Origin for sororicide

C17: from Latin sorōricīda one who murders his sister, from soror sister + caedere to slay
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012