blood clot

[bluhd klot] / ˈblʌd ˌklɒt /

NOUN

mass of thickened blood

Synonyms

WEAK

coagulum crassamentum embolism embolus grume thrombus

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Emergency surgery removed a blood clot that was blocking 90% of one of her arteries, and she was told by doctors she was lucky to be alive.

From BBC • Apr. 9, 2026

A resulting blood clot can completely block blood flow or travel to the heart or brain, triggering a heart attack or stroke.

From Science Daily • Feb. 25, 2026

Emmy-winning actress Catherine O'Hara, who starred in "Schitt's Creek" and "Home Alone," died from a blood clot in her lungs, her death certificate revealed Monday.

From Barron's • Feb. 9, 2026

Another doctor discovered a significant blood clot running from the middle of her calf, all the way up near her belly.

From Los Angeles Times • Dec. 30, 2025

A heart attack is usually caused by a blood clot in the heart muscle.

From "The Hot Zone" by Richard Preston