clot
verb
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
medications that prevent blood from clotting
substances that help to clot blood
Recent Examples on the Web
The dialysis unit’s pumps push the blood through the cartridge, while its sensors balance fluid, watch circuit pressures for safety, and automatically meter the anticoagulant that keeps the blood from clotting along the way.
—
Elie Dolgin, IEEE Spectrum, 4 June 2026
Concrete dust clotted the air, turning the afternoon dark.
—Rania Abouzeid, New Yorker, 21 May 2026
It may be needed if a pet’s ability to clot blood is compromised.
—Charlotte Observer, 12 May 2026
The parking lot was clotted with Porsches, Range Rovers, and a Ferrari.
—Kevin West, Travel + Leisure, 8 May 2026
See All Example Sentences for clot
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Elie Dolgin, IEEE Spectrum, 4 June 2026
Concrete dust clotted the air, turning the afternoon dark.
—Rania Abouzeid, New Yorker, 21 May 2026
It may be needed if a pet’s ability to clot blood is compromised.
—Charlotte Observer, 12 May 2026
The parking lot was clotted with Porsches, Range Rovers, and a Ferrari.
—Kevin West, Travel + Leisure, 8 May 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 11 Jun. 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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