retarder

[ ri-tahr-der ]

noun
  1. a person or thing that retards.

  2. Chemistry.

    • any substance added to rubber to delay or prevent vulcanization.

    • any substance added to delay a process.

  1. Building Trades. an admixture of concrete or plaster that retards its set.

Origin of retarder

1
First recorded in 1635–45; retard + -er1

Words Nearby retarder

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for retarder

retarder

/ (rɪˈtɑːdə) /


noun
  1. a person or thing that retards

  2. a substance added to slow down the rate of a chemical change, such as one added to cement to delay its setting

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