<p><strong>Verb</strong></p><ul><li>(used with object)<ul><li>In·du·rat·ed, In·du·rat·ing.</li><li>To make hard; harden, as rock, tissue, etc.: Cold indurates the soil.</li><li>To make callous, stubborn, or unfeeling: transgressions that indurate the heart.</li><li>To inure; accustom: to indurate oneself to privation and suffering.</li><li>To make enduring; confirm; establish: to indurate custom through practice.</li></ul></li></ul><p><strong>Verb</strong></p><ul><li>(used without object)<ul><li>To become hard; harden.</li><li>To become established or confirmed.</li></ul></li></ul><p><strong>Adjective</strong></p><ul><li>Hardened; unfeeling; callous; inured.</li></ul>