Crossword clues for hardener
The Collaborative International Dictionary
Hardener
Hardener \Hard"en*er\ (-'n*[~e]r), n. One who, or that which, hardens; specif., one who tempers tools.
Douglas Harper's Etymology Dictionary
Wiktionary
hardener
n. 1 One who, or that which, hardens. 2 A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins.
Usage examples of "hardener".
The intertidal sponges grew like violet shadows, crowding together and absorbing the light with their pigments, the same way they absorbed the hardeners they were fed.
Chlorine, of course, but also bases, stabilizers, softeners, hardeners for when the softeners were too soft and even materials to make the water more "slippery.