impaction

[im-pak-shuhn]
noun
1.
an act or instance of impacting.
2.
the state of being impacted; close fixation.
3.
Dentistry. the condition in which a tooth is impacted.

Origin:
1730–40; < Late Latin impāctiōn- (stem of impāctiō), equivalent to Latin impāct(us), past participle of impingere (see impacted) + -iōn- -ion

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World English Dictionary
impact
 
n
1.  the act of one body, object, etc, striking another; collision
2.  the force with which one thing hits another or with which two objects collide
3.  the impression made by an idea, cultural movement, social group, etc: the impact of the Renaissance on Medieval Europe
 
vb
4.  to drive or press (an object) firmly into (another object, thing, etc) or (of two objects) to be driven or pressed firmly together
5.  to have an impact or strong effect (on)
 
[C18: from Latin impactus pushed against, fastened on, from impingere to thrust at, from pangere to drive in]
 
im'paction
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

impaction im·pac·tion (ĭm-pāk'shən)
n.
The process or condition of being impacted.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Practice proper bowel care to avoid stool impaction.
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