1.Definition: capable of being perceived clearly
"An essay with a meaning that was not always discernible"
2.Definition: capable of being seen or noticed
"A discernible change in attitude"
3.Definition: 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"