Etymology From French clairvoyant, from clair (“clear”) + voyant (“seeing”), present participle of voir (“see”).
1
Of, relating to, or having clairvoyance.
Then there is the very large class of casual clairvoyant visions which have no traceable cause — which are apparently quite meaningless, and have no recognizable relation to any events known to the seer.1899, Charles Webster Leadbeater, Clairvoyance^(https://en.wikisource.org/wiki/Clairvoyance_(Leadbeater)/Chapter_6):
2
Able to see things that cannot be perceived by the normal senses.
3
Able to foresee the future.
4
Having great insight; sagacious.
…his vision of the future so far-reaching and clairvoyant as that of many who have lived before him and since…1895, John Ames Mitchell (ed.), Aristopi^(https://en.wikisource.org/wiki/Page:Aristopia_(1895).pdf/8):
5
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences Relating to a form of parallel processing algorithm given advance information about the problem.