engineering the surface hardening of ferrous metals by heating the metal with an oxyacetylene flame followed by rapid cooling
Read more in this article about some frequently asked questions and fun facts related to our definitions.
9 Surprising Movies That Are Based On Classic Literature
Did you know these nine movies were actually based on classic literature ... we didn't either.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012