What is SpaceX real name?

Excuse me, I've been hearing a lot about SpaceX lately, and I'm curious about something. I've often heard the name "SpaceX" referenced in the context of space exploration and rocket launches, but I'm wondering if there's a more formal or official name behind it. Is "SpaceX" just a nickname or a shorthand? Is there a real, official name that this organization goes by? It would be fascinating to learn if there's a deeper history or meaning behind the name "SpaceX" and whether it stands for something specific. Could you clarify this for me?