IPA: /ˌɛrʊˈdɪʃən/
KK: /ˌɛrʊˈdɪʃən/
A deep and extensive knowledge gained from studying, especially from books.
Her erudition in classical literature impressed everyone at the conference.
Erudition is formed from "erudire" (meaning to educate or instruct) and the suffix "-tion" (indicating the action or process of). The word refers to the process of being educated or the knowledge acquired through education.
Think of the word 'erudire' which means to educate, and remember that 'erudition' refers to the knowledge gained through education.