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mental deficiency

noun
  1. psychiatry a less common term for mental retardation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words for mental deficiency

retardation, idiocy, abnormality, slowness, dementia, amentia
mental deficiency in Medicine

mental deficiency

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