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[throm-boh-sis] /θrɒmˈboʊ sɪs/
noun, Pathology
intravascular coagulation of the blood in any part of the circulatory system, as in the heart, arteries, veins, or capillaries.
Origin of thrombosis
1700-10; < New Latin < Greek thrómbōsis. See thromb(o)-, -osis
Related forms
[throm-bot-ik] /θrɒmˈbɒt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for thrombosis
  • They can also explore their genetic likelihood of developing deep-vein thrombosis, skin cancer or glaucoma.
  • Fearing deep-vein thrombosis on such long flights, doctors teach the crews isometric exercises to perform in the cramped space.
  • In addition to his perforated colon, he had developed deep vein thrombosis, a blood clot that was potentially life-threatening.
  • Deep vein thrombosis, a serious medical condition causing life-threatening blood clots, is known to occur while flying.
  • The increased moisture will also reduce blood thickening and vein thrombosis, which causes swelling.
British Dictionary definitions for thrombosis


noun (pl) -ses (siːz)
the formation or presence of a thrombus
(informal) short for coronary thrombosis
Derived Forms
thrombotic (θrɒmˈbɒtɪk) adjective
Word Origin
C18: from New Latin, from Greek: curdling, from thrombousthai to clot, from thrombosthrombus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for thrombosis

1706, Modern Latin, from Greek thrombosis "a clumping or curdling" (from thrombousthai "become curdled or clotted," from thrombos "clot, curd, lump;" see thrombus) + -osis.

Online Etymology Dictionary, © 2010 Douglas Harper
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thrombosis in Medicine

thrombosis throm·bo·sis (thrŏm-bō'sĭs)
n. pl. throm·bo·ses (-sēz)
Formation or presence of a thrombus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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thrombosis in Science
The formation or presence of a thrombus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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thrombosis in Culture
thrombosis [(throm-boh-sis)]

The development of a blood clot in the circulatory system. Depending on the location of the clot, the resultant loss of circulation can lead to a stroke (cerebral thrombosis) or heart attack (coronary thrombosis).

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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