Definition of retardant
: serving or tending to retard
- a growth-retardant substance
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Recent Examples of retardant from the Web
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Men in bright vests rushed to its side, hooked up thick hoses to its retardant compartment, and started pumping.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'retardant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of retardant
1642
RETARDANT Defined for English Language Learners
Definition of retardant for English Language Learners
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: able to slow down the progress or development of something
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See words that rhyme with retardant Britannica English: Translation of retardant for Arabic speakers
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