CASE-HARDEN


Meaning of CASE-HARDEN in English

transitive verb Date: 1677 to harden (a ferrous alloy) so that the surface layer is harder than the interior, to make callous or insensible, ~ed adjective

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.