The legal definition is the only valid one. If y ou want to talk about it being murder in some obscure realm, then specify that. In the US, and other jurisdictions where abortion is legal, it is not and cannot be murder by definition.Only by "Legal" definition, which in God's economy is unimportant. Whether YOU like it or not, you're hiring a Contract Murderer to Murder your baby because you don't want to to bother with him/her.
Whether YOU like it or not.