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Definition of Hardener
1. n. One who, or that which, hardens; specif., one who tempers tools.
Definition of Hardener
1. Noun. A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins ¹
¹ Source: wiktionary.com
Definition of Hardener
1. one that hardens [n -S] - See also: hardens