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Definition of membrane

membrane

/ˈmɛm.bɹeɪn/
mem · brane

Plural:membranes
•
Adjective:membranous
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membrane Lexical Profile

membrane Game Scores & Validity

• noun

1

A microscopic double layer of lipids and proteins that bounds cells and organelles, or a thin, pliable layer of tissue that covers, lines, or connects structures within an organism.

Example

"The cell membrane acts as a selective barrier, regulating the transport of nutrients and waste products in and out of the cell."


2

A thin sheet of natural or synthetic material that is permeable to certain substances in solution, widely used in chemistry and engineering to filter or separate fluids.

Example

"The desalination plant uses a specialized reverse osmosis membrane to efficiently remove salt and impurities from seawater."


3

A thin, tightly stretched layer of material that vibrates to produce or detect sound, such as in a musical instrument or electronic audio device.

Example

"When sound waves strike the microphone's membrane, it vibrates and generates an electrical signal corresponding to the audio."

Synonyms
View all synonyms for membrane

• Rhymes for membrane

Word Origin & Etymology

From Latin 'membrana' meaning 'skin' or 'parchment', which derives from 'membrum' meaning 'limb' or 'member of the body'.

Cite this Entry


Wordmom. (2026). Definition of Membrane. In Wordmom Dictionary. Retrieved Oct 12, 2026, from https://wordmom.com/dictionary/membrane
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