induration

[in-doo-rey-shuhn, -dyoo-]
noun
1.
the act of indurating.
2.
the state of being indurated.
3.
Geology.
b.
hardening of rock by heat or pressure.
4.
Pathology.
a.
a hardening of an area of the body as a reaction to inflammation, hyperemia, or neoplastic infiltration.
b.
an area or part of the body that has undergone such a reaction.

Origin:
1350–1400; Middle English < Late Latin indūrātiōn- (stem of indūrātiō) a hardening. See indurate, -ion

indurative, adjective
nonindurative, adjective
unindurative, adjective
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World English Dictionary
indurate
 
vb
1.  to make or become hard or callous
2.  to make or become hardy
 
adj
3.  hardened, callous, or unfeeling
 
[C16: from Latin indūrāre to make hard; see endure]
 
indu'ration
 
n
 
'indurative
 
adj

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Dictionary.com's 21st Century Lexicon
Main Entry:  induration
Part of Speech:  n
Definition:  See lithification
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American Heritage
Medical Dictionary

induration in·du·ra·tion (ĭn'də-rā'shən, -dyə-)
n.

  1. The hardening of a normally soft tissue or organ, especially the skin, because of inflammation, infiltration of a neoplasm, or an accumulation of blood.

  2. A focus or region of abnormally hardened tissue.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica
Encyclopedia

induration

hardening of rocks by heat or baking; also the hardening of sediments through cementation or compaction, or both, without the introduction of heat. The classic example is the rock called hornfels, which is formed at contacts with igneous intrusions and in which heat and fluids from the intruding magma reconstitute the original wall rock into a hardened, flinty rock with a dense texture; it also is commonly formed by induration of carbonate sedimentary rocks and shales.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Palpate area with fingertips, measuring the diameter of induration perpendicular to the long axis of the arm.
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