| 单词 | retardation |
| 释义 | retardation (once / 10225 pages) 1n 2n Retardation is often used to describe problems in human mental development that result in a lack of intelligence or other kinds of physical or learning delays. Retardation can also indicate when something is kept from growing or developing fully. A lack of sunlight might cause retardation of your tomato plants, for example, stunting their growth. You can use retardation to describe other kinds of slowness or delays too, including simply a decrease in speed. In fact, the Latin root word, retardare, means "to make slow, delay, keep back, or hinder." WORD FAMILYretardation: retardations+/retard: retardation, retarded, retarding, retards/retarded: retardedly USAGE EXAMPLESSpell is said to be functionally illiterate with an IQ score of 70, which “falls into the mental retardation range,” according to Holton. Seattle Times(Nov 29, 2016) His lawyers said that a lower court found that Moore's IQ of 70 was "within the range of mild mental retardation." Reuters(Nov 29, 2016) As with humans, the infection in pregnant mice had caused microcephaly and growth retardation in their fetuses. The New Yorker(Aug 15, 2016) 1 1n the act of slowing down or falling behind Syn|Hyper lag, slowdown delay, holdup the act of delaying; inactivity resulting in something being put off until a later time 2n the extent to which something is delayed or held back Hyper delay, hold, postponement, time lag, wait time during which some action is awaited 3n a decrease in rate of change Syn|Ant|Hyper deceleration, slowing acceleration an increase in rate of change alteration, change, modification an event that occurs when something passes from one state or phase to another 4n any agent that retards or delays or hinders 2Syn|Hyper retardant, retardent agent an active and efficient cause; capable of producing a certain effect n lack of normal development of intellectual capacities Syn|Hypo|Hyper backwardness, mental retardation, slowness, subnormality abnormality, mental defectiveness retardation sufficient to fall outside the normal range of intelligence mental deficiency, moronitymild mental retardation amentia, idiocyextreme mental retardation imbecilityretardation more severe than a moron but not as severe as an idiot feeblemindednesssevere mental deficiency stupidity a poor ability to understand or to profit from experience |
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