Addition (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">addition</span>' is the definition.<br/ ><span class="explanation-format__explanation">(supplement is a kind of addition)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for supplement that I've seen before include "Extra" , "addition" , "additive" , "Add-on" , "Boost" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">addition</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that addition can be written as summation)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for summation that I've seen before include "Synopsis" , "Adding process" .)