Ceremony that results in name-calling (7)
I believe the answer is:
baptism
This could be a double definition.
'ceremony that results in name' is the first definition.
'baptism' can be an answer for 'ceremony' (baptism is a kind of ceremony). I am not sure about the rest of the definition.
'calling' is the second definition.
(thesaurus)
Can you help me to learn more?
(Other definitions for baptism that I've seen before include "Religious ceremony" , "Christian sacrament that symbolises admission to the church" , "Baby's wetting of the head" , "Christening ceremony" , "Christian sacrament signifying rebirth" .)