The most common and most likely answer to this crossword clue is the 9 letter word BAPTISMAL
I've seen this crossword clue in Financial Times
B
A
P
T
I
S
M
A
L
More clues leading to the result BAPTISMAL
- Special balti Pam’s used for dip
- Salt I’m sprinkling on bread, on the wetting of new loaf?
- Roll back the Spanish writing: it’s a sort of font
- Psalm a bit out of place at christening
- Psalm, a bit revised, relating to religious rite
- Encapsulated by symbol of Christ rising, a little part is related to religious ceremony
- Initiation rite’s suitable and is involved in youngster’s upbringing
- Ceremonial lamb turned about a revolving spit
- Bachelor edited psalm — it related to religious ceremony
Buddy explains!

The straight part
We know that "on the wetting of new loaf?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case on the wetting of new loaf? = baptismal.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BAPTISMAL mean?
BAPTISMAL noun- A baptismal name: a name given at baptism.
- A baptismal font: a large basin used for baptism.
- Of or relating to baptism.
- Of a name, conferred at baptism.