Perceptible; that may be perceived; that may fall under perception or the cognizance of the senses; that may be felt, seen, heard, smelt or tasted. We say, the roughness of cloth is perceivable; the dawn of the morning is perceivable; the sound of a bell is perceivable; the scent of an orange is perceivable; the difference of taste in an apple and an orange is perceivable.

That may be known, understood or conceived.