Clearly outlined and easy to see (8)
I believe the answer is:
distinct
'clearly outlined and easy to see' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for distinct that I've seen before include "Definite and unmistakeable" , "Well-defined and clear" , "Definite and unmistakable" , "easily recognisable" , "Separate and clear-cut" .)