Fourteenth 'R' one mentions after discovering puzzle's theme (12)
I believe the answer is:
enthronement
'puzzle's theme' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'fourteenth r one mentions after discovering' is the wordplay.
'discovering' says the answer is hidden in the clue (I've seen 'discovered' mean this (remove the letters covering the answer in the clue)).
'ENTHRONEMENT' is hidden within 'fourteenth r one mentions after'.
Can you help me to learn more?
(Other definitions for enthronement that I've seen before include "Installation of a monarch or bishop" , "Coronation" .)