retardation

noun retardations

1. countable, uncountable The distance by which one wave is behind another.

   Similar: delay, detention, hinderance, impediment

2. countable, uncountable The act of diminishing the rate of speed.

   Similar: delay, detention, hinderance, impediment

3. countable, uncountable A decrease in the speed of telegraph signalling.

   Similar: delay, detention, hinderance, impediment

4. countable, uncountable The extent to which anything is retarded; the result of any retarding or delay; mental, social, or physical slowness.
5. abbreviation, countable, ellipsis, uncountable Ellipsis of mental retardation Me and my friends used to feed LSD to this little retarded girl in our neighborhood and we'd lock arms around her and go "nightmare! Nightmare! Nightmare! Nightmare! Nightmare! Nightmare! Nightmare! Nightmare!" It actually cured her retardation.
6. colloquial, countable, derogatory, offensive, uncountable Extreme stupidity.
7. countable, uncountable That which retards; an obstacle; an obstruction.
8. countable, uncountable Deceleration; reduction in the magnitude of velocity. It was on the first day of the new year that the announcement was made, almost simultaneously from three observatories, that the motion of the planet Neptune, the outermost of all the planets that wheel about the sun, had become very erratic. Ogilvy had already called attention to a suspected retard
9. countable, uncountable A suspension which resolves upwards.