365 giorni (4)
I believe the answer is:
anno
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">365 giorni</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 anno that I've seen before include "... Domini, after the birth of Christ" , "...Domini, year of Our Lord" , "...Domini, AD" , "Year (L.)" .)