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

Keep scrolling for more

Learn More about plasma membrane

Statistics for plasma membrane

Last Updated

14 Jul 2019

Look-up Popularity

Time Traveler for plasma membrane

The first known use of plasma membrane was in 1893

See more words from the same year

Keep scrolling for more

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

Comments on plasma membrane

What made you want to look up plasma membrane? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

food or victuals

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!