[ ri-tahr-der ]
/ rɪˈtɑr dər /
a person or thing that retards.
- any substance added to rubber to delay or prevent vulcanization.
- any substance added to delay a process.
Building Trades. an admixture of concrete or plaster that retards its set.
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Words nearby retarder
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for retarder
/ (rɪˈtɑːdə) /
a person or thing that retards
a substance added to slow down the rate of a chemical change, such as one added to cement to delay its setting
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