English Reference

Word

thrombosis

Phoneticsthrom·bo·sis

US/θɹɑmˈboʊsəs/

UK/θɹəmbˈəʊsɪs/

Definition

n. a medical condition where a blood clot forms inside a blood vessel. This can block the flow of blood and cause serious health problems if it moves to another part of the body.

n. the formation of a blood clot within a blood vessel, obstructing the flow of blood through the circulatory system. Often used in clinical contexts to describe both the clot itself and the resulting condition.

Examples

“The doctor warned him about the risk of deep vein thrombosis after the long flight.”

“Patients who sit for long periods without moving are at a higher risk of developing thrombosis in their legs.”

Examples

simple

“The doctor warned him about the risk of deep vein thrombosis after the long flight.”

contextual

“Patients who sit for long periods without moving are at a higher risk of developing thrombosis in their legs.”

Real-World Examples

“The condition, which affects about 8,000 people in the UK, is associated with an increased risk of the blood clots that can cause a stroke, heart attack or deep vein thrombosis.”
The Guardian · 7 Sept 2026
“It leads to a higher risk of developing blood clots, which can cause a stroke, heart attack or deep vein thrombosis (DVT).”
BBC News · 6 Sept 2026

Etymology

From Ancient Greek θρόμβωσις (thrómbōsis, “curdling, clotting”). By surface analysis, thrombus + -osis.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

Scan code

englishreference.com/q/thrombosis

English Reference