| 单词 | retardent | 
| 释义 | Definition of retardent in English:retardentnoun rɪˈtɑːd(ə)nt 
 adjective rɪˈtɑːd(ə)nt 
 OriginMid 19th century; earliest use found in Thomas Sutton (1819–1875), photographic pioneer and writer. From retard + -ent. Definition of retardent in US English:retardentnounrɪˈtɑːd(ə)nt 
 adjectiverɪˈtɑːd(ə)nt 
 OriginMid 19th century; earliest use found in Thomas Sutton (1819–1875), photographic pioneer and writer. From retard + -ent.  | 
	
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