plas·​ma | \ ˈplaz-mə How to pronounce plasma (audio) \

Definition of plasma

1 : a green faintly translucent quartz
2 [New Latin, from Late Latin]
a : the fluid part of blood, lymph, or milk as distinguished from suspended material especially : blood plasma
b : the juice that can be expressed from muscle
4 : a collection of charged particles (as in the atmospheres of stars or in a metal) containing about equal numbers of positive ions and electrons and exhibiting some properties of a gas but differing from a gas in being a good conductor of electricity and in being affected by a magnetic field
5 : a display (such as a television screen) consisting of discrete cells of plasma sandwiched between two layers of glass and electrodes such that each cell emits light when it receives an electric current

Keep scrolling for more

Other Words from plasma

plasmatic \ plaz-​ˈma-​tik How to pronounce plasma (audio) \ adjective

Examples of plasma in a Sentence

the plasma that makes up a star Our new TV is a 50-inch plasma.
Recent Examples on the Web Others had used plasma wakefield accelerators to coax light out of undulators before. Adrian Cho, Science | AAAS, 25 July 2021 The training and the culture of a plasma physics experimentalist is very different from that of a planetary scientist. Adam Frank, Scientific American, 21 July 2021 Canha received platelet-rich plasma injections in both hips during his IL stint. Matt Kawahara, San Francisco Chronicle, 17 July 2021 This will prevent hot plasma from penetrating the wing structure in the event of a breach. Alex Roland And Ken Bowersox, Popular Mechanics, 8 July 2021 Last fall, Vicki dialed the family of a man who was given convalescent plasma treatments for Covid-19. New York Times, 8 July 2021 Flares are sometimes accompanied by coronal mass ejections, magnetic plasma bubbles that can reach Earth. Megan Marples And Ashley Strickland, CNN, 7 July 2021 Henderson estimated that more than 100,000 COVID-19 patients have received plasma. Mark Johnson, Milwaukee Journal Sentinel, 7 July 2021 Modern ultrashort-pulse lasers provide a reliable means to create plasma remotely. David Hambling, Forbes, 6 July 2021

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

See More

First Known Use of plasma

1517, in the meaning defined at sense 1

History and Etymology for plasma

German, from Late Latin, something molded, from Greek, from plassein to mold — more at plaster

Keep scrolling for more

Learn More About plasma

Dictionary Entries Near plasma



plasma cell

See More Nearby Entries 

Statistics for plasma

Last Updated

29 Jul 2021

Cite this Entry

“Plasma.” Dictionary, Merriam-Webster, Accessed 5 Aug. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for plasma



English Language Learners Definition of plasma

medical : the watery part of blood that contains blood cells
technical : a substance that is similar to a gas but that can carry electricity
: a type of visual display for computers, televisions, etc., that uses plasma with electrical charges between two sheets of glass and that produces pictures that are very clear and bright


plas·​ma | \ ˈplaz-mə How to pronounce plasma (audio) \

Kids Definition of plasma

: the watery part of blood, lymph, or milk


plas·​ma | \ ˈplaz-mə How to pronounce plasma (audio) \

Medical Definition of plasma

1a : the fluid part especially of blood, lymph, or milk that is distinguished from suspended material — see blood plasma
b : the juice that can be expressed from muscle
3 : a mixture of starch and gel used as an ointment base


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

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

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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