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verb (used with object)
to make the outside surface of (an alloy having an iron base) hard by carburizing and heat treatment, leaving the interior tough and ductile.
in spirit so as to render insensible or insensitive to external impressions or influences; make callous.
First recorded in
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for
Many woods, however, check severely in air-drying or
in the air.
Seasoning of Wood
Joseph B. Wagner
British Dictionary definitions for
) to form a hard surface layer of high carbon content on (a steel component) by heating in a carburizing environment with subsequent quenching or heat treatment
to harden the spirit or disposition of; make callous:
experience had case-hardened the judge
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
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Nearby words for case-harden
case the joint