Word from initials (7)
I believe the answer is:
acronym
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">word from initials</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 acronym that I've seen before include "NATO's one" , "Word made up of initials" , "Mar cony (anag)" , "Word made from initial letters of other words" , "Ernie, perhaps" .)