Contribution (5)
I believe the answer is:
input
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">contribution</span>' is the definition.<br/ ><span class="explanation-format__explanation">(input means someone's contribution to something)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for input that I've seen before include "data-feed" , "store" , "Signal supplied to a device" , "Data supplied to computer system" , "contributed information" .)