- a form of dementia, of unknown cause, starting before a person is old
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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presenile dementia in Medicine
- Any of various forms of dementia developing before old age.
- Alzheimer's disease. No longer in technical use.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.