What is a clairvoyant? It literally is a breakdown of a French word, but it actually doesn't exist in French. Clairvoyant: to see clearly. To see, and observe, and hear, and smell, and see, and sense things beyond the physical that are not part of one's regular way of being.
To be clairvoyant, as indeed I am, is to have the ability to see, as I said, things, be it internally or externally, that one has not knowledge of in the regular material world.