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Definition of retardation:

  1. That which retards; an obstacle; an obstruction.
  2. The act of retarding; hindrance; the act of delaying; as, the retardation of the motion of a ship; - opposed to acceleration.
  3. The extent to which anything is retarded; the amount of retarding or delay.
  4. 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.


retardent, slowness, awkwardness, subnormality, mental retardation, help, meanwhile, maladroitness, deliberateness, unhurriedness, slowdown, stave, deceleration, lag, insanity, impediment, backwardness, ineptness, time, holdup, meantime, braking, detainment, clumsiness, downshift, deliberation, obstacle, retardant, hindrance, letup, interim, slowing, ineptitude, delay.

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