(Latin: infans, child; caedere, kill)
Specifically it designates the destruction of pre-natal life.
There are many forms of infanticide.
Abortion is the ejection of an inviable fetus; craniotomy is the opening of the fetal skull; cephalotrysis is the crushing of the fetal head; evisceration is exenteration of the fetus; brachiotomy is the excision of the fetal arm; cleidotomy is the section of the fetal clavicles.
Embryotomy is a general term for surgical cutting of the fetus.
All such operations which are aimed at the extinction of fetal life are murder in intent.
New Catholic Dictionary