Meaning of retardation

Definition of retardation

(noun) a decrease in rate of change; "the deceleration of the arms race"
the extent to which something is delayed or held back
any agent that retards or delays or hinders; "flame-retardant"
lack of normal development of intellectual capacities
the act of slowing down or falling behind

Other information on retardation

WIKIPEDIA results for retardation
Amazon results for retardation