Three in one
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">three in one</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 triune that I've seen before include "Run tie with three in one" , "how God may be perceived" , "Group of three" .)