plasma

noun

plas·​ma ˈplaz-mə 

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

3

: protoplasm

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

plasmatic

plaz-ˈma-tik 

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

In 2023 a team using eROSITA, an x-ray telescope launched in 2019, found evidence of a plasma shell structure heated to more than eight million degrees Celsius, but the telltale glow remained elusive. — Damien Pine, Scientific American, 21 July 2026

That changed four months later when fellow Big Bang supporting player John Ross Bowie also inked a talent deal with WBTV to reprise his role as prickly plasma physicist Barry Kripke. — Nellie Andreeva, Deadline, 17 July 2026

The strongest wake signals were detected in more centralised lead-lead collisions, which create more quark-gluon plasma. — Robert Lea, Space.com, 17 July 2026

Accurately monitoring those magnetic fields is essential for understanding plasma behavior and maintaining stable reactor operation. — Georgina Jedikovska, Interesting Engineering, 16 July 2026

Word History

Etymology

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

First Known Use

1517, in the meaning defined at sense 1

Phrases Containing plasma

• blood plasma
• convalescent plasma
• plasma cell
• plasma jet
• plasma membrane
• plasma torch

Rhymes for plasma

• asthma
• chiasma
• histoplasma
• mycoplasma
• toxoplasma
• miasma

Kids Definition

plasma

noun

plas·​ma ˈplaz-mə 

1

: the watery part of blood, lymph, or milk

2

: a collection of charged particles that shows some characteristics of a gas but that differs from a gas in being a good conductor of electricity and in being affected by a magnetic field

Medical Definition

plasma

noun

plas·​ma ˈplaz-mə 

1

a

: 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

2

: protoplasm

3

: a mixture of starch and gel used as an ointment base