noun
retardation sufficient to fall outside the normal range of intelligence
• Syn: ↑abnormality
• Derivationally related forms: ↑abnormal (for: ↑abnormality)
• Hypernyms: ↑retardation, ↑mental retardation, ↑backwardness, ↑slowness, ↑subnormality
• Hyponyms: ↑feeblemindedness
Useful english dictionary. 2012.