parenticide

[ puh-ren-tuh-sahyd ]
/ pəˈrɛn təˌsaɪd /

noun

a person who kills one or both of his or her parents.
the act of killing one's parent or parents.

Origin of parenticide

First recorded in 1650–60; parent + -i- + -cide
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019