membrane
noun
mem·brane
ˈmem-ˌbrān 
1
: a thin soft pliable sheet or layer especially of animal or plant origin
2
: a piece of parchment forming part of a roll
Examples of membrane in a Sentence
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The membranes also integrated smoothly with surrounding tissue and remained stable throughout the healing process, both essential qualities for real-world medical use.
—
Prabhat Ranjan Mishra, Interesting Engineering, 27 Apr. 2026
For consumers, the best choice is a reverse osmosis system, which forces water through a semipermeable membrane that captures up to 99% of contaminants, Jones said.
—Sandee Lamotte, CNN Money, 23 Apr. 2026
This flow always encounters some resistance; how much depends on oxygen availability, cellular demand, and the integrity of the system itself, including the number of mitochondria in the cell and the condition of their membranes.
—Jasna Hodžić, Big Think, 22 Apr. 2026
The hind wings are thin, delicate membranes that are folded under the protective forewings when at rest.
—Encyclopedia Britannica, 22 Apr. 2026
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Prabhat Ranjan Mishra, Interesting Engineering, 27 Apr. 2026
For consumers, the best choice is a reverse osmosis system, which forces water through a semipermeable membrane that captures up to 99% of contaminants, Jones said.
—Sandee Lamotte, CNN Money, 23 Apr. 2026
This flow always encounters some resistance; how much depends on oxygen availability, cellular demand, and the integrity of the system itself, including the number of mitochondria in the cell and the condition of their membranes.
—Jasna Hodžić, Big Think, 22 Apr. 2026
The hind wings are thin, delicate membranes that are folded under the protective forewings when at rest.
—Encyclopedia Britannica, 22 Apr. 2026
See All Example Sentences for membrane
Cite this Entry
“Membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/membrane. Accessed 28 Apr. 2026.
Copy CitationKids Definition
membrane
noun
mem·brane
ˈmem-ˌbrān
: a thin soft flexible sheet or layer especially of a plant or animal part (as a cell, tissue, or organ)
membranous
adjective
ˈmem-brə-nəs
Medical Definition
membrane
noun
mem·brane
ˈmem-ˌbrān
1
: a thin soft pliable sheet or layer especially of animal or plant origin
2
: a limiting protoplasmic surface or interface see nuclear membrane, plasma membrane
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