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hardener

From Wiktionary

Word parts[change]

harden + -er

Pronunciation[change]

  • (US) IPA (key): /ˈhɑrdn̩ɚ/ or /ˈhɑrdənɚ/
  • (UK) IPA (key): /ˈhɑːdn̩ə/ or /ˈhɑːdənə/

Noun[change]

Singular
hardener

Plural
hardeners

  1. (countable) A hardener is a chemical substance added to something in order to harden it.