Original: Characterisation In the books, Harry is categorised as a "half-blood" wizard in the series, because although both his parents were magical, his mother, Lily Evans, was "Muggle-born".
Simplified: Abilities and interests In the books, Harry is categorised as a "half-blood" wizard in the series, because although both his parents were magical, his mother, Lily Evans, was "Muggle-born".