Enlightenment — of dietician (anag) (11)

I believe the answer is:

edification

(Other definitions for edification that I've seen before include "Moral instruction" , "Moral/intellectual improvement" , "Process of moral improvement" , "What 2 [PHILOSOPHER]s seek" , "enlightenment" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.