n.
A fingerprint that is not apparent to the eye but can be made sufficiently visible, as by dusting or fuming, for use in identification.
latent
\La"tent\, a.
[L. latens, -entis, p. pr. of latere to lie hid or concealed; cf. Gr. ?, E. lethargy: cf. F. latent.]
Not visible or apparent; hidden; springs of action.
The latent image is a photography term which refers to the hidden image on the film before it is developed. It cannot be seen, and if one were to try to see it, the latent image would be ruined altogether by the exposure to the light, and therefore no longer exist.
but maybe you simply want to see where this goes... hidden no longer
