In utero (6)
I believe the answer is:
unborn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in utero</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for unborn that I've seen before include "Not yet given birth to" , "(Of baby) not delivered" , "Yet to be delivered" , "Still in the womb" , "In utero" .)