What is the meaning of Induration?

Hardness.

Process of becoming hard.

Hardening of an area of the body as a reaction to inflammation, hyperemia, or neoplastic infiltration.

An area or part of the body that has undergone such a reaction. Most often this term is used to describe dermatologic findings.

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.

induration, (hardening of tissue)

Source: wiktionary.org