[syn: discernible, evident, observable]
The Collaborative International Dictionary of English v.0.48:
Discernible \Dis*cern"i*ble\, a. [L. discernibilis.]
   Capable of being discerned by the eye or the understanding;
   as, a star is discernible by the eye; the identity of
   difference of ideas is discernible by the understanding.
   [1913 Webster]
         The effect of the privations and sufferings . . . was
         discernible to the last in his temper and deportment.
                                                  --Macaulay.
   Syn: Perceptible; distinguishable; apparent; visible;
        evident; manifest.
        [1913 Webster]
WordNet (r) 3.0 (2006):
discernible
    adj 1: perceptible by the senses or intellect; "things happen in
           the earth and sky with no discernible cause"; "the
           newspaper reports no discernible progress in the
           negotiations"; "the skyline is easily discernible even at
           a distance of several miles" [syn: discernible,
           discernable] [ant: indiscernible]
    2: capable of being perceived clearly; "an essay with a meaning
       that was not always discernible"
    3: capable of being seen or noticed; "a discernible change in
       attitude"; "a clearly evident erasure in the manuscript"; "an
       observable change in behavior" [syn: discernible,
       evident, observable]
Moby Thesaurus II by Grady Ward, 1.0:
78 Moby Thesaurus words for "discernible":
   apparent, appreciable, apprehensible, ascertainable, beholdable,
   clear, clear as crystal, cognizable, comprehensible, conceivable,
   conspicuous, crystal-clear, detectable, determinable, disclosable,
   disclosed, discoverable, distinct, distinguishable, evident,
   explicit, exposable, exposed, exposed to view, express, findable,
   graspable, hanging out, hot, identifiable, in evidence,
   in full view, in plain sight, in view, indisputable, indubitable,
   insight, knowable, manifest, naked, noticeable, observable,
   obvious, open, open to view, open-and-shut, outcropping, palpable,
   patent, perceivable, perceptible, perspicuous, plain, plain as day,
   prehensible, recognizable, revealed, seeable, seizable,
   self-evident, self-explaining, self-explanatory, sensible, showing,
   spottable, tangible, to be seen, unclouded, unconcealed,
   understandable, undisguised, unhidden, unmistakable, viewable,
   visible, visual, warm, witnessable