Alzheimer's disease

American  

[ahlts-hahy-merz, alts-, awlts-] / ˈɑlts haɪ mərz, ˈælts-, ˈɔlts- /

Or Alzheimer disease

noun

Pathology.

1. a common form of dementia, believed to be caused by changes in the brain, usually beginning in late middle age, characterized by memory lapses, confusion, emotional instability, and progressive loss of mental ability.

---

Alzheimer's disease British  

/ ˈæltsˌhaɪməz /

noun

1. Often shortened to: Alzheimer's.  a disorder of the brain resulting in a progressive decline in intellectual and physical abilities and eventual dementia

---

Alzheimer's disease Scientific  

/ äls′hī-mərz /

1. A progressive, degenerative disease of the brain, commonly affecting the elderly, and associated with the development of amyloid plaques in the cerebral cortex. It is characterized by confusion, disorientation, memory failure, speech disturbances, and eventual dementia. The cause is unknown. Alzheimer's disease is named for its identifier, German psychiatrist Alois Alzheimer (1864–1915).

---

Alzheimer's disease Cultural  

1. A disease in which mental capacity decreases because of the breakdown of brain cells.

---

Discover More

Alzheimer's disease is a major cause of loss of intellectual function in middle-aged and elderly people.

Etymology

Origin of Alzheimer's disease

Named after Alois Alzheimer (1864–1915), German neurologist, who described it in 1907

Example Sentences

To investigate, researchers analyzed 149 cancer-driving genes in brain tissue samples from 190 people with Alzheimer's disease and compared them with samples from 121 healthy brains.

From Science Daily • Jun. 12, 2026

Ali praised Dosanjh's ability to bring warmth and restraint to emotionally complex scenes, particularly opposite Shah's character who struggles with Alzheimer's disease.

From Barron's • Jun. 10, 2026

Taken together, the researchers say these findings suggest that this metabolic abnormality may actively contribute to Alzheimer's disease rather than simply occur as a consequence of it.

From Science Daily • Jun. 10, 2026

Studies indicate that regular tea drinkers experience a reduced prevalence of cognitive decline and Alzheimer’s disease biomarkers, particularly in older adults.

From Science Daily • Jun. 9, 2026

“Because he has something called Alzheimer’s disease, Merci,” he says.

From "Merci Suárez Changes Gears" by Meg Medina