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.
Supportive care can include things like oxygen, mechanical ventilation, extracorporeal membrane oxygenation, intravenous fluids, medications to support blood pressure and flow and dialysis depending on the situation. Bruce Y. Lee, Forbes.com, 18 May 2026 Scientists at Monash University in Australia have developed ultra-thin membranes that enable hydrogen fuel cells to operate at 482 °F (250 °C). Ameya Paleja, Interesting Engineering, 18 May 2026 Zinc and vitamin D also work together to strengthen physical barriers, such as the skin and the membranes of the respiratory tract, preventing germs from entering the body. Megan Nunn, Verywell Health, 12 May 2026 After initially having no issues during the early stages of her pregnancy, things changed when Hernandez's membranes ruptured, and her water broke at 18 weeks. Ingrid Vasquez, PEOPLE, 12 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 20 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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