Definition of dementia in English:

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Pronunciation: /dəˈmen(t)SH(ē)ə/


A chronic or persistent disorder of the mental processes caused by brain disease or injury and marked by memory disorders, personality changes, and impaired reasoning.
Example sentences
  • People with dementia have a degenerative disease of the brain for which there is no cure.
  • They support people with conditions such as dementia and Alzheimer's disease.
  • Early-stage dementia or Alzheimer's disease may be associated with gluten antibodies.
mental illness, madness, insanity, derangement, lunacy


Late 18th century: from Latin, from demens, dement- 'out of one's mind'.

Words that rhyme with dementia

adventure, bencher, censure, front-bencher, trencher, venture, wencher

For editors and proofreaders

Syllabification: de·men·tia

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