Observable (5)
I believe the answer is:
overt
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">observable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for overt that I've seen before include "Open and candid" , "Not concealed - public" , "Voter (anag.)" , "totally visible" , "This is not hard to see" .)