Sphere of action (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sphere of action</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for orbit that I've seen before include "Rotating path" , "Circumgyration" , "Circling path" , "Go round" , "heavenly passage" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sphere of action</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 arena that I've seen before include "Field of combat" , "centre of conflict" , "battlefieId" , "Ring; stadium" , "Entertainments venue" .)