Baptism (11)
I believe the answer is:
christening
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">baptism</span>' is the definition.<br/ ><span class="explanation-format__explanation">(christening is a kind of baptism)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for christening that I've seen before include "Naming ceremony" , "Baptising" .)