What does super sonic mean

Super sonic means when something is faster then the speed of sound, that means over mach one. if you mean in the sonic games it is:
When Sonic has enough Chaos Emeralds, he can transform into Super Sonic. He turns yellow and goes even faster than the usual 765 mph he can run. He gets really powerful and really cool, so if Super Sonic is about to fight you, it's a good idea to run! He can also like hover/float.