Meaning of MENTAL RETARDATION

Pronunciation:			'mentl `reetâr'deyshun
WordNet Dictionary
	Definition:		[n]  lack of normal development of intellectual capacities
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	Synonyms:		backwardness, retardation, slowness, subnormality
	See Also:		abnormality, amentia, Down syndrome, Down's syndrome, idiocy, imbecility, mental defectiveness, mental deficiency, mongolianism, mongolism, moronity, stupidity, trisomy 21
Biology Dictionary
	Definition:		Mental retardation refers to below average intelligence, with a standard WAIS test IQ score of less than 70. For some patients, mental retardation is part of a syndrome (such as Down's syndrome or cri-du-chat) that includes many other physical and adaptive problems.