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retardation
1 ENTRIES FOUND:
Learner's definition of RETARDATION
[noncount]
1
old-fashioned + sometimes offensive : an unusual slowness of mental development智力迟钝
- The child suffered severe mental retardation.这个孩子患有严重的智力迟钝。
2
formal : an act of slowing down the development or progress of something延缓；延迟；妨碍
- The chemical induced a retardation of cell growth.这种化学品抑制细胞生长。
retardation
noun
re·tar·da·tion ˌrē-ˌtär-ˈdā-shən 
ri-
Synonyms
Example Sentences
The child suffered severe mental retardation. The chemical induced a retardation of cell growth.
Recent Examples on the Web The Everrati's left pedal operates pads on discs in the normal fashion, but the motors also give powerful regenerative retardation when the accelerator is lifted. 
Mike Duff, Car and Driver, 18 June 2021 The Vantage’s brake pedal has a nice firm weight but little travel, retardation being down to pressure rather than movement. Mike Duff, Car and Driver, 28 Feb. 2018 The policy of retardation of submarine technology ended right after the beginning of the Anglo-German naval race (marked by the German Naval Laws of 1898 and 1900). chicagotribune.com, 28 July 2017 At the end Austen had psychomotor retardation and could barely move. Rene Chun, Los Angeles Magazine, 19 June 2017 The front wheels threaten to lock up under what feels like normal levels of retardation at low speeds. Mike Duff, Car and Driver, 30 June 2017
Mike Duff, Car and Driver, 18 June 2021 The Vantage’s brake pedal has a nice firm weight but little travel, retardation being down to pressure rather than movement. Mike Duff, Car and Driver, 28 Feb. 2018 The policy of retardation of submarine technology ended right after the beginning of the Anglo-German naval race (marked by the German Naval Laws of 1898 and 1900). chicagotribune.com, 28 July 2017 At the end Austen had psychomotor retardation and could barely move. Rene Chun, Los Angeles Magazine, 19 June 2017 The front wheels threaten to lock up under what feels like normal levels of retardation at low speeds. Mike Duff, Car and Driver, 30 June 2017 Word History
First Known Use
15th century, in the meaning defined at sense 1
Time Traveler
The first known use of retardation was in the 15th century 👨🏻🏫 Mr. Ng 韋氏詞典 📚 – mw.mister5️⃣.net
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