# stenosis

/ˌstɛˈnoʊsɪs/ (US) · /stɛnˈəʊsɪs/ (UK) · CEFR C2 · Noun

Source: https://englishreference.com/word/stenosis
Updated: 2026-05-25

## Definition

a narrowing of a tube or opening in the body. This can make it hard for things like blood or air to flow through.

For teachers: the abnormal narrowing of a bodily passage or orifice, such as a blood vessel or valve. Often results in restricted flow or increased pressure within the affected system.

## Examples

- The doctor diagnosed the patient with aortic stenosis.
- Narrowing of the coronary arteries, known as stenosis, can lead to chest pain and reduced blood flow to the heart muscle.
- While some degree of narrowing is common with age, significant stenosis in the carotid artery requires immediate intervention to prevent a potential stroke.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.