Senseless state (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">senseless state</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 coma that I've seen before include "State of insensibility" , "Deep sleep" , "State of unconsciousness caused by illness" , "Stupor" , "Long period of unconsciousness" .)