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
Recent Examples on the Web
Meningitis is inflammation of membranes called meninges that surround the brain and spinal cord.
—
Lauren J. Young, Scientific American, 21 Mar. 2026
These are all different from viral meningitis, which is the most common form of meningitis -- and usually mild -- inflammation of tissue surrounding the brain and spinal cord membranes, and caused by a virus, the CDC says.
—Mary Kekatos, ABC News, 19 Mar. 2026
Porter said he was placed on an ECMO (extracorporeal membrane oxygenation) machine, which, according to Mayo Clinic, pumps blood outside of the body to a heart-lung machine, removes carbon dioxide from the blood and sends oxygen-rich blood back to the body.
—Emily St. Martin, Los Angeles Times, 19 Mar. 2026
Other complications include meningitis (inflammation of the membrane surrounding the brain and spinal cord), encephalitis (inflammation of the brain), inflammation of the pancreas, and hearing loss.
—Emily Kay Votruba, EverydayHealth.com, 16 Mar. 2026
See All Example Sentences for membrane
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Lauren J. Young, Scientific American, 21 Mar. 2026
These are all different from viral meningitis, which is the most common form of meningitis -- and usually mild -- inflammation of tissue surrounding the brain and spinal cord membranes, and caused by a virus, the CDC says.
—Mary Kekatos, ABC News, 19 Mar. 2026
Porter said he was placed on an ECMO (extracorporeal membrane oxygenation) machine, which, according to Mayo Clinic, pumps blood outside of the body to a heart-lung machine, removes carbon dioxide from the blood and sends oxygen-rich blood back to the body.
—Emily St. Martin, Los Angeles Times, 19 Mar. 2026
Other complications include meningitis (inflammation of the membrane surrounding the brain and spinal cord), encephalitis (inflammation of the brain), inflammation of the pancreas, and hearing loss.
—Emily Kay Votruba, EverydayHealth.com, 16 Mar. 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 26 Mar. 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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