a. rare. [f. WITNESS v. + -ABLE.] That may be witnessed.
1851. Lancaster Examiner & Herald, 29 May, 2/3. To draw attention, if we can, to some of the terrible scenes which are witnessable every day in the interior of the island [Ireland].
1870. Eng. Mech., 25 Feb., 57980. If this be not a witnessable fact, it is at any rate a self-evident one.
1891. Athenæum, 30 May, 710/2. In one rôle, that of Bob Saunders, now taken by Mr. H. Nicholls, a great improvement is witnessable.