Do you know… What SCUBA stands for?

We all know the word SCUBA. Most of the people, even non-divers have heard it somewhere, but what does it stand for ? I have asked many divers since I started Scuba diving as a kid and most of them had no clue. Here it is: "Self-Contained Underwater Breathing Apparatus" . Invented by Major Christian J. Lambertsen back in 1952.