It is only a mass of tissue like a tumor. Every child in America knows that this is a lie. They have changed the meaning of murder and killing. They say performing an abortion is not the same as killing a child. They refer to the unborn child as a fetus.
Fetus is a perfectly good Latin word for fruitful or bringing forth.
However, it sounds inhuman to our ears. You see it is widely believed in this country that individuals should be free to make their own choices. The name pro-choice gives the evil abortion movement an aura of American liberty and apple pie. Slavery supporters played the same semantic games in their own time. They said that a slave was not a human like everyone else.