case-hardened steel case-hardened • case history · · · Info · Definitions · Characters · · case-hardened steel · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) steel with a surface that is much harder than the interior metal. Synonyms: case-hardened steel. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074