hardener

Word parts

harden + -er

Pronunciation

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

Noun

Singular hardener

Plural hardeners

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