The Collaborative International Dictionary of English v.0.48:

Admissible \Ad*mis"si*ble\, a. [F. admissible, LL. admissibilis.
   See Admit.]
   Entitled to be admitted, or worthy of being admitted; that
   may be allowed or conceded; allowable; as, the supposition is
   hardly admissible. -- Ad*mis"si*ble*ness, n. --
   Ad*mis"si*bly, adv.
   [1913 Webster]