clotted; clotting
1
: to become a clot : form clots
2
: to undergo a sequence of complex chemical and physical reactions that results in conversion of fluid blood into a coagulated mass : coagulate
1
: to cause to form into or as if into a clot
2
: to fill with clots
Examples of clot in a Sentence
Noun
We were told that his stroke was caused by a clot in his brain.
a clot of daisies occupied one corner of the flower bed
Verb
medications that prevent blood from clotting
substances that help to clot blood
Recent Examples on the Web
Duaa Eldeib, CNN Money, 8 May 2026
The role of vitamin K is so crucial that researchers were awarded the Nobel Prize in 1943 for their discovery of its ability to form clots and stop bleeding in babies.
—Lee Hutchinson, ArsTechnica, 6 May 2026
Stefanie Waldek, Travel + Leisure, 2 May 2026
Both clotting and bleeding disorders are usually inherited or acquired, according to the National Heart, Lung and Blood Institute.
—Sara Moniuszko, USA Today, 30 Apr. 2026
See All Example Sentences for clot
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Noun
The role of vitamin K is so crucial that researchers were awarded the Nobel Prize in 1943 for their discovery of its ability to form clots and stop bleeding in babies.
—Duaa Eldeib, CNN Money, 8 May 2026
The role of vitamin K is so crucial that researchers were awarded the Nobel Prize in 1943 for their discovery of its ability to form clots and stop bleeding in babies.
—Lee Hutchinson, ArsTechnica, 6 May 2026
Verb
Compression socks can also help, though anyone with blood-clotting issues should consult their doctor before wearing them.
—Stefanie Waldek, Travel + Leisure, 2 May 2026
Both clotting and bleeding disorders are usually inherited or acquired, according to the National Heart, Lung and Blood Institute.
—Sara Moniuszko, USA Today, 30 Apr. 2026
See All Example Sentences for clot
Cite this Entry
“Clot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clot. Accessed 17 May. 2026.
Copy CitationKids Definition
clot
1 of 2 noun
: a mass or lump made by a liquid (as blood) that thickens and sticks together
clot
2 of 2 verb
clotted; clotting
: to become or cause to become a clot : form clots
Medical Definition
clot
2 of 2 verb
clotted; clotting
: to undergo a sequence of complex chemical and physical reactions that results in conversion of fluid blood into a coagulum and that involves shedding of blood, release of thromboplastin from blood platelets and injured tissues, inactivation of heparin by thromboplastin permitting calcium ions of the plasma to convert prothrombin to thrombin, interaction of thrombin with fibrinogen to form an insoluble fibrin network in which blood cells and plasma are trapped, and contraction of the network to squeeze out excess fluid : coagulate
: to cause to form into or as if into a clot
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