Word.ws English Dictionary

Plural of dementia

regular plural

The plural of dementia is dementias or dementiae.

Forms of dementia

Singulardementia /dɪˈmɛnʃə/
Pluraldementias
dementiae
Countableusually uncountable

Dementias and dementiae in a sentence

  • Alzheimer's disease and related dementias have come to be defined as biomedical in nature.2007, Athena McLean, The person in dementia: a study in nursing home care in the US, page 28. From the entry biomedical
  • Approximately 20% of all dementiae can be reversed if they are correctly diagnosed and treated.1986, The Compendium of Continuing Education in Dentistry, page 508, column 1. From the entry dementiae
  • Dementiae can arise from such things as depression, drug reactions and nutritional deficiencies as well as from brain disease.1998 November, Judy Dothard Simmons, “Alzheimer’s Disease News Mixed: Prevention, cure still elusive but treatment picture improves”, in…. From the entry dementiae
  • The increasing aging of the population determines a constant growth of the dementiae until becoming a real epidemic.1993, Recent Advances in Aging Science, page 723. From the entry dementiae

Meaning of dementia

  1. noun A progressive decline in cognitive function due to damage or disease in the brain beyond what might be expected from normal aging. Areas particularly affected include memory, attention, judgement, language and problem solving.
  2. noun Madness or insanity.

Full definition of dementia

Questions about the plural of dementia

What is the plural of dementia?
The plural of dementia is dementias or dementiae.
Which is correct, dementias or dementiae?
Both are used. dementias is the more common of the two in English writing.
Is dementia countable?
Dementia is usually an uncountable noun; its plural is used for kinds or examples of it.

Source and license

Adapted from Wiktionary: dementia (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Plural of dementia.” Word.ws, https://word.ws/plural/dementia. Based on Wiktionary, CC BY-SA 4.0.