Police have an expression for people who put themselves into circumstances that force officers to shoot them: "suicide by cop." Following this lingo, suicide bombers commit "suicide by murder," so I propose we call such acts "murdercide": the killing of a human or humans with malice aforethought by means of self-murder.
The reason we need semantic precision is that suicide has drawn the attention of scientists, who understand it to be the product of two conditions quite unrelated to murdercide: ineffectiveness and disconnectedness. According to Florida State University psychologist Thomas Joiner, in his remarkably revealing scientific treatise Why People Die by Suicide (Harvard University Press, 2006): "People desire death when two fundamental needs are frustrated to the point of extinction; namely, the need to belong with or connect to others, and the need to feel effective with or to influence others."
By this theory, the people who chose to jump from the World Trade Center rather than burning to death were not suicidal; neither were the passengers on Flight 93 who courageously fought the hijackers for control of the plane that ultimately crashed into a Pennsylvania field; and neither were the hijackers who flew the planes into the buildings.