If you describe someone as erudite, you mean that they have or show great academic knowledge. You can also use erudite to describe something such as a book or a style of writing. He was never dull, always erudite and well informed. an original and highly erudite style. showing a lot of knowledge based on careful study = learned (past participle of erudire , from rudis )
The act of instructing; the result of thorough instruction; the state of being erudite or learned; the acquisitions gained by extensive reading or study; particularly, learning in literature or criticism, as distinct from the sciences; scholarship