Also, dis⋅cern⋅a⋅ble.
Origin: 1555–65; < L
discernibilis (
see discern, -ible ); r. earlier
discernable < MF, equiv. to
discern(
er) to discern +
-able -able 
Related forms: dis⋅cern⋅i⋅ble⋅ness, dis⋅cern⋅a⋅ble⋅ness, noun
dis⋅cern⋅i⋅bly, dis⋅cern⋅a⋅bly, adverb