The state or quality of being arduous; steepness, difficulty.
Hardness.
The quality of non-friability; the extent to which a rock does not crumble; rock strength.
The process of the strengthening of rocks by heating, compaction or cementation, or a combination thereof.
An area or part of the body that has undergone such a reaction. Most often this term is used to describe dermatologic findings.
Process of becoming hard.
Hardening of an area of the body as a reaction to inflammation, hyperemia, or neoplastic infiltration.