clairvoyance means 'clear sight'. a person with clairvoyant abilities has a strong sense of 'inner vision' and is able to receive information in the form of images, visions, symbols,digits, people etc..
seeing auras is linked to clairvoyance because it is an ability that relys on visual sense.
Clairvoyance, from 17th century French Clair meaning "clear" and voyant meaning "seeing", is a term used to describe the transference of information about an object, location or physical event through means other than the 5 traditional senses. A person said is to have Clairvoyance abilities is referred to as a clairvoyant.
In some circles, clairvoyance is also known as remote viewing, although the term "remote viewing" itself is not as widely applicable as clairvoyance as it refers to a specific controlled process.
The notion of clairvoyance also gained some support from the US and Russian government during and after the Cold War, and both governments made several attempts to harness clairvoyance as an intelligence gathering tool.
Current thinking among proponents of clairvoyance posits that most people are born with clairvoyant abilities but then start to subliminate them as their childhood training compels them to adhere to acceptable social norms. Numerous institutes offer training courses attempt to revive the clairvoyant abilities present in those early years.

Another school of thought says that our "sixth sense" grows when we do spiritual practice. With regular spiritual practice done according to basic spiritual principles we increase our "spiritual level" and are able to perceive and experience the "subtle world" to greater degrees.[1] Clairvoyance is one of the abilities that may be gained by such discipline.

According to many Taoist- and Buddhist-related practices, abilities such as clairvoyance and many other 'supernormal' abilities are by-products of spiritual awakening and the realisation of divine consciousness. Integral to spiritual and mind expansion is breathwork and meditation. The vast majority of people only normally use one-third of their brains and one-third of their lungs. In Taoist and Buddhist thought this is not a coincidence. By expanding lung capacity and learning to use the lungs as a 'bellows' to direct qi (Chinese: 氣 qì, meaning "air") around the body and open the subtle energy channels we also naturally expand the mind and refine consciousness. This is how these seemingly miraculous powers develop, though they are not truly miraculous. They are considered to be latent abilities that everyone possesses but need 'waking up.'

---