Unit of temperature (6)
I believe the answer is:
degree
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unit of temperature</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 degree that I've seen before include "Award conferred on a 1 across" , "Position on a scale" , "It's given to college graduates" , "Comparative amount" , "Award given to a college graduate" .)