membrane

noun

mem·​brane ˈmem-ˌbrān How to pronounce membrane (audio)
1
: a thin soft pliable sheet or layer especially of animal or plant origin
2
: a piece of parchment forming part of a roll
membraned adjective

Examples of membrane in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In the Americas, doctors can help infected people by putting them on a life-support machine known as ECMO, for extracorporeal membrane oxygenation, which breathes for the patient by oxygenating the blood. Los Angeles Times, 5 May 2026 As the liquids pass a separating membrane, ions transfer between sides to charge or discharge power. Mrigakshi Dixit, Interesting Engineering, 4 May 2026 Two chemical components that are high in water content are stored in large tanks, and pumped through a cell with a membrane separating them. New Atlas, 2 May 2026 According to Mayo Clinic, an ECMO machine (extracorporeal membrane oxygenation) is used for people with life-threatening heart and lung conditions. Wendy Grossman Kantor, PEOPLE, 1 May 2026 See All Example Sentences for membrane

Word History

Etymology

Middle English, from Latin membrana skin, parchment, from membrum

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of membrane was in the 15th century

Browse Nearby Words

Cite this Entry

“Membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/membrane. Accessed 6 May. 2026.

Kids Definition

membrane

noun
mem·​brane ˈmem-ˌbrān How to pronounce membrane (audio)
: a thin soft flexible sheet or layer especially of a plant or animal part (as a cell, tissue, or organ)
membranous
ˈmem-brə-nəs
adjective

Medical Definition

membrane

noun
mem·​brane ˈmem-ˌbrān How to pronounce membrane (audio)
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
membraned adjective

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