Caseharden (verb)

1. To harden the surface of something, typically steel, by heating it and then cooling it rapidly.
2. To make something, such as a person or group, more able to withstand difficult conditions or hostile treatment.

Origin:

From the middle english word "casen" meaning "to harden" and the suffix "-en" meaning "to make".

Examples:

1. The blacksmith casehardened the sword's blade to make it more durable.
2. After years of living in poverty, he casehardened himself to the struggles of everyday life.
3. The company casehardened the steel to make it more resistant to wear and tear.
4. The soldier casehardened himself in preparation for the grueling battle ahead.
5. Casehardening the metal made it stronger and more resistant to corrosion.