Do you have to lose body parts to be a cyborg?

cyborg is part human part robot so part of you would have to robot, so answer is it would be easier to become a cyborg if you got rid of some pesky in-the-way body parts, but you can also add robot parts to your existing body, but they have to be attached like... muscle activated machine guns that have been added into the flesh of your arms, without damaging the arm of course, just changing your arms capabilities from slapping and hitting to wholesale carnage