— sororicidal , adj.
/seuh rawr"euh suyd', -ror"-/ , n.
1. a person who kills his or her sister.
2. the act of killing one's own sister.
[ 1650-60; sororicida one who kills his sister, -cidium the act of killing one's sister, equiv. to soror- (s. of soror ) SISTER + -cida, -cidium -CIDE ]