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Denotation vs. Connotation

mental deficiency

noun
1.
(psychiatry) a less common term for mental retardation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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mental deficiency in Medicine

mental deficiency n.
See mental retardation.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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