Inauguration, foundation (13)
I believe the answer is:
establishment
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">inauguration</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >'<span class="explanation-format__original">foundation</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for establishment that I've seen before include "Action of setting up on a permanent basis" , "being incorporated in this" , "Act of setting up" , "Permanent staff - powerful class" , "system" .)