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retardation

[ ree-tahr-dey-shuhn ]
/ ˌri tɑrˈdeɪ ʃən /
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noun
the act of retarding or state of being retarded.
something that retards; hindrance.
Usually Offensive. slowness or limitation in intellectual understanding and awareness, emotional development, academic progress, etc.See also intellectual disability, mental retardation.
Music. a form of suspension that is resolved upward.
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Also re·tard·ment [ri-tahrd-muhnt] /rɪˈtɑrd mənt/ (for defs. 1, 2) .

Origin of retardation

First recorded in 1400–50; late Middle English retardacioun, from Latin retardātiōn- (stem of retardātiō ), equivalent to retardāt(us) (see retard, -ate1) + -iōn- noun suffix (see -ion)

usage note for retardation

See retarded.

OTHER WORDS FROM retardation

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for retardation

retardation

less commonly retardment (rɪˈtɑːdmənt)

/ (ˌriːtɑːˈdeɪʃən) /

noun
the act of retarding or the state of being retarded
something that retards; hindrance
the rate of deceleration
psychiatry the slowing down of mental functioning and bodily movement

Derived forms of retardation

retardative or retardatory, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for retardation

retardation
[ rē′tär-dāshən ]

n.
The condition of being relatively slow in mental, emotional, or physical development.
The extent to which something is held back or delayed.
Mental retardation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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