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retardancy

 - 1 dictionary result

re⋅tard⋅ant

[ri-tahr-dnt]
–noun Chemistry.
1. any substance capable of reducing the speed of a given reaction.
–adjective
2. retarding or tending to retard (usually used in combination): fire-retardant construction materials.

Origin:
1635–45; retard + -ant


re⋅tard⋅ance, re⋅tard⋅an⋅cy, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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