hematoma

[hee-ma-toh-muh, hem-uh-]
noun, plural hematomas, hematomata [hee-ma-toh-muh-tuh, hem-uh-] . Pathology.
a circumscribed collection of blood, usually clotted, in a tissue or organ, caused by a break in a blood vessel.

Origin:
1840–50; hemat- + -oma

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World English Dictionary
haematoma or (US) hematoma (ˌhiːməˈtəʊmə, ˌhɛm-, ˌhiːməˈtəʊmə, ˌhɛm-)
 
n , pl -mas, -mata
pathol a tumour of clotted or partially clotted blood
 
hematoma or (US) hematoma (ˌhiːməˈtəʊmə, ˌhɛm-, ˌhiːməˈtəʊmə, ˌhɛm-, -mətə)
 
n

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American Heritage
Medical Dictionary

hematoma he·ma·to·ma (hē'mə-tō'mə)
n. pl. he·ma·to·mas or he·ma·to·ma·ta (-mə-tə)
A localized swelling filled with blood resulting from a break in a blood vessel.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
hematoma   (hē'mə-tō'mə)  Pronunciation Key 
Plural hematomas or hematomata (hē'mə-tō'mə-tə)
The abnormal buildup of blood in an organ or other tissue of the body, caused by a break in a blood vessel.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
He then inserted a tube to drain the liquefied blood clot, known as a subdural hematoma.
The outlook depends on the size of the hematoma and the amount of brain swelling.
Hematoma forming inside the wrist, because of internal hemorrhaging.
Brain tissue swelling and a hematoma within the brain put increased pressure on the brain and can eventually destroy it.
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