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retardation

 
Noun retardation has 5 senses
  1. deceleration, slowing, retardation - a decrease in speed; "the deceleration of the arms race"
    --1 is a kind of speed, swiftness, fastness
    Derived forms: verb retard3, verb retard4
  2. retardation - the extent to which something is delayed or held back
    --2 is a kind of
    delay, hold, time lag, postponement, wait
    Derived form: verb retard3
  3. retardant, retardent, retardation - any agent that retards or delays or hinders; "flame-retardant"
    --3 is a kind of agent
    Derived form: verb retard2
  4. retardation, mental retardation, backwardness, slowness, subnormality - lack of normal development of intellectual capacities
    --4 is a kind of stupidity
    --4 has particulars:
     abnormality, mental defectiveness; moronity, mental deficiency; idiocy, amentia; imbecility; mongolism, mongolianism, Down's syndrome, Down syndrome, trisomy 21
    Derived form: verb retard1
  5. slowdown, lag, retardation - the act of slowing down or falling behind
    --5 is a kind of delay, holdup
    Derived forms: verb retard3, verb retard4
retalliate retaluating retama retama raetam retambra retaqin retard retardant retardation retarded retarded depression retardent retarding force retardness retards retarget retarted

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