An estimated 5.5 million Americans of all ages have Alzheimer's disease. Of the estimated 5.5 million Americans living with Alzheimer's dementia in 2017, an estimated 5.3 million are age 65 and older and approximately 200,000 individuals are under age 65 and have younger-onset Alzheimer's. One in 10 people age 65 and older (10 percent) has Alzheimer's dementia.
Major dictionaries. The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, a word that refers to a lung disease contracted from the inhalation of very fine silica particles, specifically from a volcano; medically, it is the same as silicosis.
English dictionary entries claiming the title of longest English word: The longest word in a standard English dictionary is the 45-letter 'pneumonoultramicroscopicsilicovolcanoconiosis' . This word was concocted in 1935 by a fan of word games and puzzles, using the lung disease, silicosis, as its base.he second longest official word that is used in the English language is pneumonoultramicroscopicsilicovolcano-coniosis and describes a disease that involves the lungs (commonly known as black lung). It contains 45 letters. 15 people found this useful.