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
Metal flashing, and flexible membranes also help ensure a deck is properly waterproofed against the house siding.
—
Lee Wallender, The Spruce, 8 Jan. 2026
Humans need fat for basic cellular and biological functions in the body—fats, or lipids, are essential for creating cellular membranes, absorbing hormones and vitamins and regulating body temperature.
—Lauren J. Young, Scientific American, 7 Jan. 2026
Exterior work on the Bloch Building will see the space’s green roof replaced, as soil, grass, plants, hardscaping and a waterproof membrane on the roof will all be changed out.
—Nathan Pilling, Kansas City Star, 7 Jan. 2026
The bones and cartilage are enclosed in a membrane that’s filled with an oily liquid called synovial fluid.
—Sarah Lindenfeld Hall, Popular Science, 7 Jan. 2026
See All Example Sentences for membrane
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.
Lee Wallender, The Spruce, 8 Jan. 2026
Humans need fat for basic cellular and biological functions in the body—fats, or lipids, are essential for creating cellular membranes, absorbing hormones and vitamins and regulating body temperature.
—Lauren J. Young, Scientific American, 7 Jan. 2026
Exterior work on the Bloch Building will see the space’s green roof replaced, as soil, grass, plants, hardscaping and a waterproof membrane on the roof will all be changed out.
—Nathan Pilling, Kansas City Star, 7 Jan. 2026
The bones and cartilage are enclosed in a membrane that’s filled with an oily liquid called synovial fluid.
—Sarah Lindenfeld Hall, Popular Science, 7 Jan. 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 11 Jan. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share