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

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Other Words from plasma

plasmatic \ plaz-​ˈma-​tik How to pronounce plasmatic (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 Only about 2 percent of the 6,100 people who have recovered have donated their plasma, Rodriguez said. Silvia Foster-frau,, "Seemingly unfettered, novel coronavirus continues to spread in San Antonio area with nearly 4,000 new cases this week," 10 July 2020 The actor later donated his plasma to coronavirus research and continues to be outspoken about the importance of social distancing and wearing a mask when around others. Hannah Yasharoff, USA TODAY, "Tom Hanks doesn't get 'how common sense has somehow been put into question' with coronavirus," 8 July 2020 The couple returned to California in late March and, as a COVID-19 survivor, Hanks donated his convalescent plasma to help others. Ruth Kinane,, "Tom Hanks says we need to unify (and wear masks!) to defeat coronavirus: 'We're all in this together'," 7 July 2020 Avery's doctors at Menorah Medical Center collaborated with physicians at Research Medical Center in Kansas City -- both are part of the HCA Healthcare system -- to treat him with convalescent plasma. Dakin Andone, CNN, "A 24-year-old Covid-19 survivor is celebrating a different kind of independence this July Fourth," 4 July 2020 Then on June 11, the team at Memorial Hermann gave her convalescent plasma to help stabilize her and boost her recovery. Alison Medley, Houston Chronicle, "'She is my soldier': Mom-to-be overcomes harrowing COVID-19 battle," 26 June 2020 The study's outcomes focused on safety and the potential benefit of transfusing convalescent plasma to patients with severe coronavirus. Fox News, "Study shows 76 percent of coronavirus patients improve after plasma transfusion," 5 June 2020 Hoxworth Blood Center had distributed more than 373 units of convalescent plasma as of Wednesday. Terry Demio,, "'It was a gift': St. Elizabeth gives COVID-19 convalescent plasma to 40-plus patients," 1 June 2020 Doctors there administered plasma treatments, the antiviral drug remdesivir and the steroid dexamethasone – a common treatment course for COVID patients. Ken Alltucker, USA TODAY, "'Pushing the boundaries': Long lines for COVID tests, stressed labs delay results as demand spikes," 12 July 2020

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.

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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

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Time Traveler for plasma

Time Traveler

The first known use of plasma was in 1517

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Statistics for plasma

Last Updated

28 Jul 2020

Cite this Entry

“Plasma.” Dictionary, Merriam-Webster, Accessed 8 Aug. 2020.

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More Definitions for plasma


How to pronounce plasma (audio)

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

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