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 retardation [,ri:tɑ:'deiʃәn]   添加此单词到默认生词本
n. 迟延, 妨碍, 阻止

[化] 缓聚作用

[医] 阻滞, 迟缓




    retardation
    [ noun ]
    1. a decrease in rate of change

      2. <noun.attribute>
      the deceleration of the arms race
    2. the extent to which something is delayed or held back

      3. <noun.time>
    3. any agent that retards or delays or hinders

      4. <noun.object>
      flame-retardant
    4. lack of normal development of intellectual capacities

      5. <noun.cognition>
    5. the act of slowing down or falling behind

      6. <noun.act>


    Retardation \Re`tar*da"tion\, n. [L. retardatio: cf. F.
    retardation.]
    1. The act of retarding; hindrance; the act of delaying; as,
    the retardation of the motion of a ship; -- opposed to
    {acceleration}.

    The retardations of our fluent motion. --De Quinsey.

    2. That which retards; an obstacle; an obstruction.

    Hills, sloughs, and other terrestrial retardations.
    --Sir W.
    Scott.

    3. (Mus.) The keeping back of an approaching consonant chord
    by prolonging one or more tones of a previous chord into
    the intermediate chord which follows; -- differing from
    suspension by resolving upwards instead of downwards.

    4. The extent to which anything is retarded; the amount of
    retarding or delay.

    {Retardation of the tide}.
    (a) The lunitidal interval, or the hour angle of the moon
    at the time of high tide any port; the interval
    between the transit of the moon and the time of high
    tide next following.
    (b) The age of the tide; the retard of the tide. See under
    {Retard}, n.

    1. A medicine commonly used to control epilepsy in pregnant women appears to cause minor birth defects and retardation, raising a dilemma about how to prevent seizures that can also harm the unborn, a study concludes.
    2. Aside from his retardation, Kohl is blind and an active carrier of the hepatitis B virus.
    3. Young children are especially susceptible to the effects of lead poisoning, which can cause mental retardation, impaired development, learning disabilities and liver and kidney problems.
    4. "We easily arrive at a clearer picture of the last twenty years and a better understanding of the conflicts in the northern hemisphere, namely between East and West, as an important cause of the retardation or stagnation of the South.
    5. Lead poisoning can damage the nervous system and lead to mental retardation and other mental disorders.
    6. Although rubella, once known as German measles, is mild in most cases, congenital rubella syndrome _ rubella at birth _ can cause blindness, retardation and heart defects.
    7. Down's syndrome is a congenital defect that includes mental retardation and bowel and heart abnormalities.
    8. We can't say that anymore." The study found evidence that women who took Tegretol during pregnancy were more likely to produce babies with delayed development and mental retardation.
    9. District Attorney Joe Price said he was hopeful all along of a death sentence, but feared questions about Penry's mental retardation would hamper the jury.
    10. But others knew Purdy as the high school drop-out described in one police report as dangerous and suffering from "mild mental retardation." Some saw him when he was down and out, with a scraggly beard and ragged clothes.
    11. Robert was born with Down's Syndrome, a genetic disorder that causes mental retardation and other defects.
    12. Therapy improved his speech problem, but his IQ as a young person tested as low as 37. A doctor's report places him at "borderline mental retardation" today.
    13. Purdy, who attended the Cleveland School as a child, was described as a danger to himself and others and suffering from "mild mental retardation" in a mental health report prepared after an arrest in El Dorado County, Perry said.
    14. The fatal, inherited disorder causes mental retardation and physical abnormalities such as dwarfism, deafness, heart defects and arthritic joint pain.
    15. Of the children studied, those not helped educationally were 2.7 times more likely to have IQs in the mental retardation range, below 70, the study found.
    16. But in splintered voting in a Texas case, the court said sentencing juries and judges must be allowed to take into consideration a murder defendant's mental retardation.
    17. Many of these calculations did not incorporate vital transport mechanisms such as retardation and decay.
    18. "At what level of mental retardation can sterilization be compelled?"
    19. Bowden, whose attorneys contended he should not be executed because of mental retardation, was sentenced to death for a 1976 murder.
    20. FAS now is the leading cause of birth defects with associated mental retardation.
    21. "We now recognize that fetal alcohol syndrome is one of the greatest causes of birth defects and mental retardation in the United States," said Iris Smith, project director of the Georgia Addiction, Pregnancy and Parenting Program in Atlanta.
    22. But about a quarter of the survivors have serious disorders, including cerebral palsy, extremely low intelligence and retardation.
    23. The Environmental Protection Agency today proposed new regulations to reduce levels of lead in the nation's drinking water supply, a move that would curb exposure to a metal that can cause mental retardation in children and high blood pressure in adults.
    24. So long as sentencers can consider and give effect to mitigating evidence of mental retardation in imposing sentence, an individualized determination of whether death is the appropriate punishment can be made in each particular case.
    25. Earlier this year, Coe was pregnant carrying a fetus with Trisomy 13 syndrome, a condition marked by congenital malformations, including multiple-organ systems and severe mental retardation, according to the complaint.
    26. The committee also found a much greater danger for mental retardation among unborn babies exposed to low-level radiation in the eighth to 15th weeks after conception.
    27. "We don't know what causes most mental retardation," he said.
    28. The proposed rule outlines the specific details of the preadmission screening programs and requires an annual review of current nursing home residents with mental illness and retardation.
    29. Under the law, nursing homes will lose federal Medicaid funds if they accept patients who suffer from mental illness or mental retardation unless they also need nursing home care.
    30. Scientists reported they isolated the gene underlying the most common inherited form of mental retardation.
    retardation
    retardation angle
    retardation area
    retardation axis
    retardation coefficient
    retardation coil
    retardation controller
    retardation curve
    retardation efficiency
    retardation factor
    retardation field
    retardation formula
    retardation function
    retardation method
    retardation motion
    retardation network
    retardation of bone age
    retardation of compre...
    retardation of mean s...
    retardation of standing
    retardation of the tide
    retardation of thought
    retardation path
    retardation phase
    retardation plate
    retardation rocket
    retardation sheet
    retardation spectrum
    retardation test
    retardation theory
    retardation time
    retardation time spec...
    retardation wedge
    retardation-modulated...
    retardationaxis
    retardative
    retardatory
    retarded
    retarded acid
    retarded action
    retarded admission
    retarded baseline
    retarded bomb proximi...
    retarded caving
    retarded cement
    retarded child
    retarded closing
    retarded coagulation
    retarded combustion
    retarded concrete
    retarded control
    retarded creep
    retarded deciduous teeth
    retarded dentition
    retarded depression
    retarded distance
    retarded effect
    retarded elastic defo...
    retarded elasticity
    retarded elasticity f...
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