I know what you speak of. You definately experienced leaving bodyspace and opening up to higher spaces. If you mean the void as the Buddhists use the word then no, it is not called the void. The void is everything. Everything is the void. Just like whenyou dream everything in the dream is insubstantial and has no inherent reality, everything is just appearances in the void. What you had is an experience, and all experiences are void. But the experience you had was of leaving body space and entering dreamspace. In other words, you were transfering into the fourth dimension or astral world. Your mind was clear. You had a vision of emptiness. Good work. It is a good sign. But don't get hung up on the visions and experiences. Just keep meditating. Meditate in your lucid dreams. Check out my blog by clicking on the link in my signature. I describe the Nirmanakaya, Samboghakaya, and Dharmakaya. What you experienced is known as a Samboghakaya experience. There are an infinite number of experiences. This one is common and everyone who gets to the point of meditation where you have experiences something like this. But you can call it what you like. Whatever you call it it is just a word. Become familiar with this space and learn how to access it at will.