induration

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induration

[‚in·də′rā·shən]
(biology)
The process of hardening, especially by increasing the fibrous elements.
(geology)
The hardening of a rock material by the application of heat or pressure or by the introduction of a cementing material.
A hardened mass formed by such processes.
The hardening of a soil horizon by chemical action to form a hardpan.
(medicine)
Hardening of a tissue or organ due to an accumulation of blood, inflammation, or neoplastic growth.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.