follow Dictionary.com

Get the details behind our redesign

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.
Cite This Source
Examples for clotting
  • The term serum refers to plasma from which the clotting proteins have been removed.
  • Blood serum is blood plasma without fibrinogen or the other clotting factors.
British Dictionary definitions for clotting

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
Cite This Source
Word Origin and History for clotting
clot
O.E. clott, akin to Du. kloot "ball" (see clod). The verb, of fluids, is from 1591.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
clotting 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.
Cite This Source
clotting 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.
Cite This Source

Word of The Day

Difficulty index for clot

Most English speakers likely know this word

Word Value for clotting

11
15
Scrabble Words With Friends