subnormal

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++sub·nor·mal /ˌsʌbˈnɔːməl◂ $ -ˈnɔːr-/ adjective technical  LESSless or lower than normal 比正常少的，低于正常的 subnormal temperatures 低于正常的温度

Examples from the Corpus

subnormal• I forgave him for the many occasions on which he had unthinkingly made me feel mentally subnormal.• More than half the total number were categorized as educationally subnormal.• The authorities treat the children as subnormal.• A great deal hangs upon the species difference, the human capacity of the less subnormal, and the potentiality of normal infants.• It provides special education, as noted in Chapter 4, for educationally subnormal children and for those previously described as ineducable.• Consent can not be given by a child, for example, or by a severely subnormal individual.• It is unclear what standard of consent should be employed with respect to children or those of subnormal intelligence.

sub·nor·mal adjectiveChineseSyllable  

than Corpus lower normal or less

subnormal
sub‧nor‧mal /ˌsʌbˈnɔːməl◂ $ -ˈnɔːr-/ adjective technical
less or lower than normal:
    subnormal temperatures

sub·nor·malBrE /ˌsʌbˈnɔːml/ 🔊NAmE /ˌsʌbˈnɔːrml/ 🔊 adjective(specialist) lower than normal 低于正常的；正常值以下的；偏低的◆subnormal temperatures偏低的气温(sometimes offensive) having less than the normal level of intelligence 低能的；弱智的◆educationally subnormal children学习能力低下的儿童