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

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 Buy young blood for the plasma and inject it to slow the aging process. Marianne Garvey, CNN, 28 July 2022 However, full recovery to the pre-Covid level looks unlikely anytime soon as demand for plasma remains in check. Trefis Team, Forbes, 23 Sep. 2021 The samples were taken two or more times over the course of a year since the patients’ original COVID infection and compared with plasma from a control group of 26 people who had fully recovered from the disease. Sasha Warren, Scientific American, 21 July 2022 There’s Gabe and A-Aaron, out here in these woods covering grasshoppers and all manner of flora with plasma. Richard Rys, Vulture, 14 Mar. 2021 Our own star, the Sun, sometimes launches huge clouds of plasma into space called coronal mass ejections (CMEs). Jamie Carter, Forbes, 13 Aug. 2022 Galaxy clusters contain up to thousands of galaxies and tons of plasma in motion. Caroline Delbert, Popular Mechanics, 8 Aug. 2022 Studies on plasma until now have been mixed, and Sheth said more studies are needed. Meredith Cohn,, 25 Jan. 2022 Another knock against the idea of using breast milk to treat an infection comes from research on convalescent plasma. Fortune, 20 Jan. 2022 See More

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.

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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Dictionary Entries Near plasma



plasma cell

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Statistics for plasma

Last Updated

27 Sep 2022

Cite this Entry

“Plasma.” Dictionary, Merriam-Webster, Accessed 5 Oct. 2022.

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More Definitions for plasma


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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