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 Twenty-eight days after recovery, those who have had COVID-19, the disease caused by the virus, are asked to donate convalescent plasma, a liquid part of the blood that contains antibodies after a virus. Elizabeth Kuhr, NBC News, "Gay men restricted from donating plasma to U.K. coronavirus trials," 11 May 2020 To donate plasma, a person must have recovered from the coronavirus and be symptom free, officials said. New York Times, "Three children have died of a mysterious syndrome linked to the coronavirus.," 9 May 2020 Monoclonal antibody therapy is a modern take on convalescent plasma, where someone who has recovered from coronavirus donates blood to someone who is currently ill. Elizabeth Cohen, CNN, "Drug inspired by an old treatment could be the 'next big thing for Covid-19'," 6 May 2020 Among them: convalescent plasma, the liquid part of blood that is collected from patients who have recovered from the infection. Tresa Baldas, Detroit Free Press, "Henry Ford doctor on ventilator beats COVID-19: 'I came as close to death as you can be'," 29 Apr. 2020 In that plasma, the company is identifying antibodies that show the most activity against SARS-CoV-2. Michael Waldholz, Scientific American, "Three Ways to Make Coronavirus Drugs In a Hurry," 23 Apr. 2020 These test results can also aid in determining if someone can donate plasma, which may serve as a possible treatment for those who are ill from COVID-19. Elizabeth Gulino,, "What Is The Coronavirus Antibody Test?," 9 Apr. 2020 The New York Blood Center is also accepting this convalescent plasma at their donor centers, asking potential volunteers to first fill out a form. Alison Fox, Travel + Leisure, "New York City Has Been Hit Particularly Hard by Coronavirus — Here’s How to Help the City We All Love," 8 Apr. 2020 Using plasma from coronavirus survivors is still experimental, but researchers hope this type of therapy proves to be effective. Caitlin O'kane, CBS News, "Tom Hanks' blood to be used for coronavirus research," 27 Apr. 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

15 May 2020

Cite this Entry

“Plasma.” Dictionary, Merriam-Webster, Accessed 28 May. 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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