Capable of being seen (7)
I believe the answer is:
visible
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capable of being seen</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for visible that I've seen before include "In view" , "Showing up" , "In sight" , "Apparent" , "Capable of being seen" .)