tempering

English

Verb

tempering

1. present participle of temper

Noun

tempering (plural temperings)

1. The act by which something is tempered.
   • 1872, Louis Emmanuel Gruner, The Manufacture of Steel, page 29:

     Caron has, in fact, discovered this very curious circumstance, that a bar of steel becomes shorter under successive temperings, while it increases in size, laterally, in such a manner, that there actually is an increase of volume.