discoverable

from WordNet (r) 3.0 (2006)

discoverable
    adj 1: capable of being ascertained or found out; "ascertainable
           facts" [syn: {ascertainable}, {discoverable}]

from The Collaborative International Dictionary of English v.0.48

Discoverable \Dis*cov"er*a*ble\, a.
   Capable of being discovered, found out, or perceived; as,
   many minute animals are discoverable only by the help of the
   microscope; truths discoverable by human industry.
   [1913 Webster]