Copiousness (10)
I believe the answer is:
luxuriance
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">copiousness</span>' is the definition.<br/ ><span class="explanation-format__explanation">(luxuriance is a kind of copiousness)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for luxuriance that I've seen before include "Lushness" , "Copiousness" .)