basement membrane
noun
: a thin membranous layer of connective tissue that separates a layer of epithelial cells from the underlying lamina propia
Examples of basement membrane in a Sentence
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The company recently completed patient enrollment for a global Phase 3 trial in anti-glomerular basement membrane (anti-GBM) disease, a rare condition where the immune system mistakenly attacks the kidneys and the lungs.
—
Juergen Eckhardt, Forbes.com, 23 Apr. 2025
Human tissue distribution of novel basement membrane collagen Molecules.
—Allison Futterman, Discover Magazine, 17 Apr. 2024
The body reacts to a component of skin called the basement membrane.
—Dr. Keith Roach, oregonlive, 30 Apr. 2021
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Juergen Eckhardt, Forbes.com, 23 Apr. 2025
Human tissue distribution of novel basement membrane collagen Molecules.
—Allison Futterman, Discover Magazine, 17 Apr. 2024
The body reacts to a component of skin called the basement membrane.
—Dr. Keith Roach, oregonlive, 30 Apr. 2021
Cite this Entry
“Basement membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/basement%20membrane. Accessed 2 Jul. 2025.
Copy CitationMedical Definition
basement membrane
noun
base·ment membrane
ˌbā-smənt- 
1
: a thin extracellular supporting layer that separates a layer of epithelial cells from the underlying lamina propria and is composed of the basal lamina and reticular lamina
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