Wiki - The word erudition came into Middle English from Latin. A scholar is erudite when instruction and reading followed by digestion and contemplation have effaced all rudeness, that is to say smoothed away all raw, untrained incivility, ... 

Meaning
Erudition is the depth, polish and breadth that education confers. The Latin word educāre means to bring out or train; hence an educated person has come to think critically and logically. An erudite person has both deep and broad familiarity with general subjects and is usually knowledgeable in a particular subject, by virtue of study and extensive reading of the subject's literature.