dementia

noun
de·​men·​tia | \ di-ˈmen(t)-shə How to pronounce dementia (audio) , -shē-ə\

Definition of dementia

1 : a usually progressive condition (such as Alzheimer's disease) marked by the development of multiple cognitive deficits (such as memory impairment, aphasia, and the inability to plan and initiate complex behavior) dementia is diagnosed only when both memory and another cognitive function are each affected severely enough to interfere with a person's ability to carry out routine daily activities.The Journal of the American Medical Association
2 : madness, insanity a fanaticism bordering on dementia

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Other Words from dementia

demential \ di-​ˈmen(t)-​shəl How to pronounce demential (audio) , -​shē-​əl \ adjective

Synonyms & Antonyms for dementia

Synonyms

aberration, derangement, insanity, lunacy, madness, mania, rage [archaic]

Antonyms

mind, saneness, sanity

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Examples of dementia in a Sentence

This patient suffers from dementia. a new study on age-related dementias

Recent Examples on the Web

The protein, which indicates brain cell damage, is linked to chronic traumatic encephalopathy, a condition that can cause memory loss, depression, and emotional instability, and can eventually lead to dementia. Eva Frederick, Science | AAAS, "Just one season of playing football—even without a concussion—can cause brain damage," 7 Aug. 2019 But one area of scientific research that deserves much more attention is that of cannabis and its effect on Alzheimer’s and dementia. Mary Schumacher, chicagotribune.com, "Cannabis, Alzheimer’s and hope are on the horizon," 2 Aug. 2019 But the many pathways to dementia are still poorly understood—and at this point, impossible to prevent or treat. Lila Maclellan, Quartz, "Canada has an excellent health care plan. Bernie Sanders’s might be even better," 31 July 2019 Baseball Bill Plaschke wrote a wonderful column over the weekend on how baseball helps people battling Alzheimer’s and dementia. Los Angeles Times, "The Sports Report: Baseball can be a comfort to those with Alzheimer’s," 29 July 2019 Donations can be made to dementia/Alzheimer's research. sun-sentinel.com, "Deaths in South Florida: 7/26," 26 July 2019 New Mexico Santa Fe: Monthly gatherings in the city focused on creative stimulus for those living with Alzheimer’s or dementia are helping a growing trend nationwide. USA TODAY, "Moon rocks, Misty of Chincoteague, Haiku Stairs: News from around our 50 states," 28 June 2019 Also discovered were deficiencies in other areas that might contribute to dementia, such as high levels of fasting insulin. Linda Marsa, Discover Magazine, "A New Treatment for Alzheimer's? It Starts With Lifestyle," 16 Nov. 2018 That's because a lack of estrogen has been linked to dementia, heart disease and osteoporosis, and patients who enter menopause prematurely spend less time with normal levels of estrogen. Colleen Stinchcombe, Woman's Day, "How Long Does Menopause Last?," 6 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'dementia.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of dementia

1806, in the meaning defined at sense 1

History and Etymology for dementia

Latin, from dement-, demens mad, from de- + ment-, mens mind — more at mind

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More Definitions for dementia

dementia

noun
de·​men·​tia | \ di-ˈmen-chə How to pronounce dementia (audio) \

Medical Definition of dementia

: a usually progressive condition (as Alzheimer's disease) marked by the development of multiple cognitive deficits (as memory impairment, aphasia, and inability to plan and initiate complex behavior)

Other Words from dementia

demential \ -​chəl How to pronounce demential (audio) \ adjective

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