Meaning & use
Hardener
Last updated
A substance added to a material, such as resin or nail polish, to make it set firm or become more durable.
See it in a sentence
Mix the resin with the hardener before pouring it into the mold.
The nail salon applied a clear hardener to strengthen her brittle nails.
A note on using this word
Common in industrial and craft contexts, especially with two-part epoxies that only cure once resin and hardener are combined.
Words with a similar meaning
catalystcuring agent
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