Definition of Alzheimer's. 1  Alzheimer's disease is a progressive, degenerative disorder that attacks the brain's nerve cells, or neurons, resulting in loss of memory, thinking and language skills, and behavioral changes. Origin of the term Alzheimer's disease dates back to 1906 when Dr. Alois Alzheimer, a German physician, presented a case history before a medical meeting of a 51-year-old woman who suffered from a rare brain disorder. 2  A brain autopsy identified the plaques and tangles that today characterize Alzheimer's disease.
Since the release of the first novel, Harry Potter and the Philosopher's Stone, on 30 June 1997, the books have gained immense popularity, critical acclaim and commercial success worldwide.
Harry Potter and the Goblet of Fire is the fourth book in the Harry Potter series. The first, Harry Potter and the Philosopher's Stone, was published by Bloomsbury on 26 June 1997; the second, Harry Potter and the Chamber of Secrets, was published on 2 July 1998; and the third, Harry Potter and the Prisoner of Azkaban, followed on 8 July 1999.