hardening in a sentence

Definition

HARDENING: The process of becoming firm or solid, often referring to physical substances or a strengthening of determination or resolve.

The hardening of the soil made it difficult for the roots to penetrate.
She felt a hardening resolve within herself after facing numerous challenges.
The process of hardening steel involves heating it to a high temperature and then cooling it rapidly.
As winter approached, the hardening of the lake's surface signaled the end of boating season.
His hardening attitude towards the project made it clear he was no longer interested in collaboration.