Lumen

usgb/ˈluːmɪn/
noun

The inside space in a tube, such as blood vessel or part of the body.

The catheter was inserted into the lumen of the artery.
Visual representation of "lumen" - The inside space in a tube, such as blood vessel or part of the body

Often appears as...

  • arterial lumen
  • intestinal lumen

Usage tips

Technical

Definition 1 of 3
Visual representation of "lumen"
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Biological Tubes

Refers to interior of tubular structures in the body like veins.

Illustration for Biological Tubes
The surgeon examined the lumen to make sure there were no blockages.
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Not Always Visible

Understanding 'lumen' may involve medical images, as it's internal.

Illustration for Not Always Visible
The X-ray displayed a clear image of the lumen of the esophagus.
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Health Indicator

A clear lumen can indicate good health; blockages can signal problems.

Illustration for Health Indicator
Her healthy arteries had a wide lumen, allowing smooth blood flow.
Visual representation of the word "Lumen"

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