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.
Peering into droplets In 2019, researchers led by Michael Rosen at UT Southwestern Medical Center discovered that synthetic nucleosomes in the lab merge into membrane-less droplets called condensates. Neetika Walter, Interesting Engineering, 5 Dec. 2025 In their new study, the LJI scientists found that T(rm) cells are studded with a membrane receptor molecule called GPR25. Gqlshare, San Diego Union-Tribune, 2 Dec. 2025 These boots feature a full-grain leather and mesh upper and are warm, but ultra-thin and flexible, with a waterproof membrane that keeps water out and lets moisture out. Alesandra Dubin, Travel + Leisure, 1 Dec. 2025 This allowed for more fluidity and a smaller membrane for his performance to translate through. Andrew McGowan, Variety, 29 Nov. 2025 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 15 Dec. 2025.

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

More from Merriam-Webster on membrane

Last Updated: - Updated example sentences
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