| 单词 | mental retardation |
| 释义 | mental retardationSEE SYNONYMS FOR mental retardation ON THESAURUS.COM noun(no longer in technical use; considered offensive) a developmental disorder characterized in varying degrees by a subnormal ability to learn, a substantially low IQ, and impaired social adjustment. Origin of mental retardationFirst recorded in 1900–15 usage note for mental retardationSee retarded. Words nearby mental retardationmentally, mentally ill, mental nerve, mental point, mental reservation, mental retardation, mental scotoma, mental spine, mental symphysis, mental telepathy, mentation Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for mental retardationmental retardation nounpsychiatry the condition of having a low intelligence quotient (below 70) 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 Medical definitions for mental retardationmental retardation n.Subnormal intellectual development or functioning that is the result of congenital causes, brain injury, or disease and is characterized by any of various deficiencies, ranging from impaired learning ability to social and vocational inadequacy.mental deficiency The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for mental retardationmental retardation Below-average intellectual ability resulting from a genetic defect, brain injury, or disease, and usually present from birth or early infancy. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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