In all cases? Killing someone in self-defense is technically murder, but we have decided to remove such killing from the legal definition.
In the case of abortion, there is the added argument of whether or not a fetus is a human being.
If you want to be an absolutist on murder, I have no problem with that. But you aren't. You draw the line at a different place than people who are pro-choice, but you draw the line nonetheless.
It's technically "homocide." "Murder" is a legal term and is defined by the laws. Generally it means the unjustified killing of another. Dictionary.com says "an unlawful killing." Self-defense is a legitimate justification.
Homocide is not always wrong. Murder is.
In the case of abortion, there is the added argument of whether or not a fetus is a human being.
That's a losing argument. I am more respectful of those who acknowledge that it is a human life, but that it enjoys fewer protections than a more-developed life.
SD