The largest of the Dodecanese islands (6)
I believe the answer is:
rhodes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the largest of the dodecanese islands</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 rhodes that I've seen before include "British imperialist; Greek island" , "She and Rod have a Greek holiday here" , "Island, explorer" , "Hordes go to the Greek island" , "Shored (anag) - Greek island" .)