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clot

[klot] /klɒt/
noun
1.
a mass or lump.
2.
a semisolid mass, as of coagulated blood.
3.
a small compact group of individuals:
a clot of sightseers massed at the entrance.
4.
British Informal. blockhead, dolt, clod.
verb (used without object), clotted, clotting.
5.
to form into clots; coagulate.
verb (used with object), clotted, clotting.
6.
to cause to clot.
7.
to cover with clots:
Carefully aimed snowballs clotted the house.
8.
to cause to become blocked or obscured:
to clot the book's narrative with too many characters.
Origin
1000
before 1000; Middle English; Old English clott lump; cognate with Middle Dutch klotte, German Klotz block, log (cf. klutz)
Related forms
declot, verb, declotted, declotting.
nonclotting, adjective
unclotted, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for clot
  • She died of a blood clot blockage in her lungs, according to the office of the medical examiner.
  • Most of the snow was melted or trampled to mud, but here and there a clot of it still showed grey rather than white in the gloom.
  • Far more serious is the possibility that the clot, or a piece of it, splits off and starts racing round the circulatory system.
  • Access was via a single ramp, where a human clot formed.
  • Some organisms, for example, use only six proteins to clot blood-irreducibility reduced.
  • clot busting drug reduces number of amputations from severe frostbite.
  • Though the region with the aneurysm is initially wider than normal, blood swirling in aneurysm can clot.
  • These materials are prone to infection, clot formation and other complications.
  • The liquid does not seem to form a conventional blood clot, the group notes.
  • If that clot is in the vertebral artery system, it can cause a stroke in the brain stem, which can be devastating.
British Dictionary definitions for clot

clot

/klɒt/
noun
1.
a soft thick lump or mass: a clot of blood
2.
(Brit, informal) a stupid person; fool
verb clots, clotting, clotted
3.
to form or cause to form into a soft thick lump or lumps
Derived Forms
clottish, adjective
Word Origin
Old English clott, of Germanic origin; compare Middle Dutch klotte block, lump
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 clot
n.

Old English clott "a round mass, lump," akin to Dutch kloot "ball," Danish klods "a block, lump," German Klotz "lump, block;" probably related to cleat and clod.

v.

early 15c., from clot (n.). Of fluids from 1590s. Related: Clotted; clotting.

Online Etymology Dictionary, © 2010 Douglas Harper
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clot in Medicine

clot (klŏt)
n.
A soft, nonrigid, insoluble mass formed when blood or lymph gels. v. clot·ted, clot·ting, clots
To coagulate.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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clot in Science
clot
  (klŏt)   
A soft insoluble mass formed when blood or lymph gels. During blood clotting, white blood cells, red blood cells, platelets, and various clotting factors interact in a cascade of chemical reactions initiated by a wound. When a body tissue is injured, calcium ions and platelets act on prothrombin to produce the enzyme thrombin. Thrombin then catalyzes the conversion of the protein fibrinogen into fibrin, a fibrous protein that holds the clot together. An abnormal clot inside the blood vessels or the heart (a thrombus or an embolus) can obstruct blood flow.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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