Adjective: unseeable ,ún'see-u-bul
- Impossible or nearly impossible to see; imperceptible by the eye
"the unseeable man";
- invisible
See also: camouflaged, concealed, covert, hidden, imperceptible, infrared, lightless, nonvisual, occult, out of sight, ultraviolet, undetectable, unperceivable, unseen
Encyclopedia: Unseeable