1. adjective
a) Above nature; that which is beyond or added to nature, often so considered because it is given by God or some force beyond that which humans are born with. In Roman Catholic theology, is considered to be a supernatural addition to human nature.
b) Something that is not of the usual. Something that is somehow not natural, or has been altered by forces that are not understood fully if at all.
2. noun
A supernatural being.
Wikipedia foundation.