plasma membrane

noun

Definition of plasma membrane

: a semipermeable limiting layer of cell protoplasm consisting of a fluid phospholipid bilayer with intercalated proteins

called also cell membrane

— see cell illustration

Examples of plasma membrane in a Sentence

Recent Examples on the Web Other, typically smaller ones were assembled within the cell before being released through the plasma membrane and became known as exosomes. Quanta Magazine, "Cells Talk in a Language That Looks Like Viruses," 2 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'plasma membrane.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of plasma membrane

1893, in the meaning defined above

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The first known use of plasma membrane was in 1893

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Cite this Entry

“Plasma membrane.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plasma%20membrane. Accessed 16 May. 2021.

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More Definitions for plasma membrane

plasma membrane

noun

Medical Definition of plasma membrane

: a semipermeable limiting layer of cell protoplasm consisting of a fluid phospholipid bilayer with intercalated proteins

called also cell membrane, plasmalemma

More from Merriam-Webster on plasma membrane

Britannica.com: Encyclopedia article about plasma membrane

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